MESON Chess Problem Database
Problem Display
PID: 838 (Q7/2R5/1B6/1BpP1prp/1N1knP1N/1p2R1P1/8/2n1K3 w - - 0 1)
Gooderson, Arthur R
2/3 Prize, British Chess Magazine, 1970
#2
11 + 8
| 3751 | FIDE Album (1968-1970) | 1977 |
| 3207 | A R Gooderson An English Progressive | 1996 |
| 56 | The Problemist | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Rxg3
- 2.Sxf5#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd3+
- 2.Rxd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sxg3
- 2.Bxc5#
- 1...Sd6
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...b2
- 2.Sc2#
- 1...Rxg3
- Tries
- 1.Ba6?
- 1...Sd3+
- 2.Rxd3#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sd6
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...b2
- 2.Sc2#
- 1...Kxe3!
- 1...Sd3+
- 1.Ba7?
- 1...Sd3+
- 2.Rxd3#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sd6
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...b2
- 2.Sc2#
- 1...Kxe3!
- 1...Sd3+
- 1.Rxc5?
- threat
- 2.Rc4#
- 1...Sd3+
- 2.Rxd3#
- 1...Kxe3
- 2.Rc3#
- 1...Sxc5!
- threat
- 1.Re7?
- 1...Sd3+
- 2.Rxd3#
- 1...Kxe3
- 2.Bxc5#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Sf3#
- 1...b2
- 2.Sc2#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sf2
- 2.Sf3#
- 1...Sc3
- 2.Sf3#
- 1...Sd6
- 2.Sf3#
- 1...Sf6
- 2.Sf3#
- 1...Sd2!
- 1...Sd3+
- 1.Rc8?
- 1...Sd3+
- 2.Rxd3#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 1...b2
- 2.Sc2#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sd6
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...Kxe3!
- 1...Sd3+
- 1.Qc6?
- 1...Sd3+
- 2.Rxd3#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 2.Qxc5#
- 1...b2
- 2.Sc2#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 2.Qxc5#
- 1...Sf2
- 2.Bxc5#
- 2.Qxc5#
- 1...Sc3
- 2.Bxc5#
- 2.Qxc5#
- 1...Sd6
- 2.Bxc5#
- 2.Qxc5#
- 1...Sf6
- 2.Bxc5#
- 2.Qxc5#
- 1...Kxe3!
- 1...Sd3+
- 1.Qb7?
- 1...Sd3+
- 2.Rxd3#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 1...b2
- 2.Sc2#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sd6
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...Kxe3!
- 1...Sd3+
- 1.Qd8?
- 1...Sd3+
- 2.Rxd3#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 1...b2
- 2.Sc2#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sd6
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...Kxe3!
- 1...Sd3+
- 1.Qe8?
- 1...Sd3+
- 2.Rxd3#
- 1...Kxe3
- 2.Bxc5#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Sf3#
- 2.Bxc5#
- 2.Qe5#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 2.Qe5#
- 1...Sf2
- 2.Sf3#
- 2.Bxc5#
- 2.Qe5#
- 1...Sc3
- 2.Sf3#
- 2.Bxc5#
- 2.Qe5#
- 1...Sd6
- 2.Sf3#
- 2.Bxc5#
- 2.Qe5#
- 1...Sf6
- 2.Sf3#
- 2.Bxc5#
- 2.Qe5#
- 1...b2!
- 1...Sd3+
- 1.Qg8?
- 1...Sd3+
- 2.Rxd3#
- 1...Rxg3
- 2.Sxf5#
- 1...Rxg8
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 1...b2
- 2.Sc2#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sd6
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...Kxe3!
- 1...Sd3+
- 1.Qh8+?
- 1...Rg7
- 2.Sxf5#
- 1...Sf6
- 2.Bxc5#
- 1...Kxe3!
- 1...Rg7
- 1.d6?
- 1...Sd3+
- 2.Rxd3#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 1...Sxd6
- 2.Bxc5#
- 1...b2
- 2.Sc2#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...Kxe3!
- 1...Sd3+
- 1.Ba6?
- Keys
- 1.Qa3!
- 1...Sd3+
- 2.Rxd3#
- 1...Kxe3
- 2.Sc2#
- 1...Rxg3
- 2.Sxf5#
- 1...Sxg3
- 2.Bxc5#
- 1...b2
- 2.Sf3#
- 1...Rg4
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Rg7
- 2.Sxf5#
- 1...Rg8
- 2.Sxf5#
- 1...Sa2
- 2.Rd3#
- 1...Se2
- 2.Rd3#
- 1...Sd2
- 2.Bxc5#
- 1...Sf2
- 2.Bxc5#
- 1...Sc3
- 2.Bxc5#
- 1...Sd6
- 2.Bxc5#
- 1...Sf6
- 2.Bxc5#
- 1...Sd3+
- 1.Qa3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- S(d);N_GUARD::B(I),XP(e)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- P(b);N_GUARD::S(D)
- Tries
- Try
- B(G);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);N_GUARD::B(I),XP(e)
- P(b);N_GUARD::S(D)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- B(I);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);N_GUARD::B(I),XP(e)
- P(b);N_GUARD::S(D)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- R(J);XP(e)
- Threat
- B(I)+R(J),DCHECK
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- K(c);S_FLIGHT,XR(B)::B(I)+R(J),DCHECK
- Refutation
- S(d);P_SPINS(d),XR(J)
- Try
- R(J);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- K(c);P_SPINS(d),S_FLIGHT,XR(B)::B(I),XP(e)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- S(d);XP(C)::S(F)
- P(b);N_GUARD::S(D)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);::S(F)
- Refutation
- S(d);
- Try
- R(J);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- P(b);N_GUARD::S(D)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);N_GUARD::B(I),XP(e)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- Q(K);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- P(b);N_GUARD::S(D)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- Q(K);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- P(b);N_GUARD::S(D)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);N_GUARD::B(I),XP(e)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- Q(K);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- P(b);N_GUARD::S(D)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);N_GUARD::B(I),XP(e)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- Q(K);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- K(c);P_SPINS(d),S_FLIGHT,XR(B)::B(I),XP(e)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- Refutation
- P(b);
- Try
- Q(K);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- R(g);N_GUARD,XQ(K)::S(F),XP(f)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- P(b);N_GUARD::S(D)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);N_GUARD::B(I),XP(e)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- Q(K);CHECK
- Vars
- R(g);P_SPINR(g)::S(F),XP(f)
- S(d);P_SPINS(d)::B(I),XP(e)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- P(H);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- S(d);N_GUARD,XP(H)::B(I),XP(e)
- P(b);N_GUARD::S(D)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);N_GUARD::B(I),XP(e)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- Actual
- Q(K);
- Vars
- S(a);CHECK,N_GUARD::R1(B),XS(a)
- K(c);N_SPINP(e),P_SPINP(b),S_FLIGHT,XR(B)::S(D)
- R(g);N_GUARD,XP(C)::S(F),XP(f)
- S(d);N_GUARD,XP(C)::B(I),XP(e)
- P(b);::S(F)
- R(g);N_GUARD::S(F),XP(f)
- S(a);N_GUARD::R1(B)
- S(d);N_GUARD::B(I),XP(e)
Developed and maintained by Brian Stephenson.
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