MESON Chess Problem Database
Problem Display
PID: 372 (8/8/4pp1B/2QBk3/3p2P1/r3nR1K/b1p1N2b/4R3 w - - 0 1)
Mansfield, Comins
The Observer, 1935
(First published on Sun Dec 15 1935)
#2
8 + 9
| 3550 | Complete Mansfield/II | 1997 |
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Bf4#
- 1...Bf4
- 2.Bxf4#
- 1...Sc4
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Sxd5
- 2.Sc3#
- 1...d3
- 2.Rxe3#
- 1...exd5
- 2.Qe7#
- 1...f5
- 2.Bg7#
- 1...Bg1
- Tries
- 1.Sc3?
- threat
- 2.Bxa2#
- 2.Bb3#
- 2.Bc4#
- 2.Qc7#
- 1...Bxd5
- 2.Qc7#
- 1...dxc3
- 2.Rexe3#
- 2.Rfxe3#
- 1...exd5
- 2.Qe7#
- 1...f5
- 2.Bg7#
- 1...Rb3
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 2.Qc7#
- 1...Ra5
- 2.Qc7#
- 1...Ra6
- 2.Bxa2#
- 2.Bb3#
- 2.Bc4#
- 1...Ra7
- 2.Bxa2#
- 2.Bb3#
- 2.Bc4#
- 1...Bb1
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 2.Qc7#
- 1...Bb3
- 2.Bxb3#
- 2.Bc4#
- 2.Qc7#
- 1...Bc4
- 2.Bxc4#
- 2.Qc7#
- 1...d3
- 2.Bxa2#
- 2.Bb3#
- 2.Bc4#
- 2.Rexe3#
- 2.Rfxe3#
- 1...Rxc3!
- threat
- 1.Sg3?
- threat
- 2.Bxa2#
- 2.Bb3#
- 2.Bc4#
- 2.Bf4#
- 1...Bxd5
- 2.Bf4#
- 2.Qc7#
- 1...exd5
- 2.Qe7#
- 1...f5
- 2.Bg7#
- 1...c1Q
- 2.Bc4#
- 2.Bf4#
- 1...c1R
- 2.Bc4#
- 2.Bf4#
- 1...Rb3
- 2.Bxb3#
- 2.Bc4#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 2.Bf4#
- 1...Rc3
- 2.Bc4#
- 2.Bf4#
- 1...Ra5
- 2.Bf4#
- 1...Bb1
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 2.Bf4#
- 1...Bb3
- 2.Bxb3#
- 2.Bc4#
- 2.Bf4#
- 1...Bc4
- 2.Bxc4#
- 2.Bf4#
- 1...Bxg3!
- threat
- 1.Sf4?
- threat
- 2.Sg6#
- 2.Qc7#
- 1...Bxf4
- 2.Bxf4#
- 1...exd5
- 2.Qe7#
- 1...f5
- 2.Bg7#
- 1...c1Q
- 2.Sg6#
- 1...c1R
- 2.Sg6#
- 1...Rc3
- 2.Sg6#
- 1...Ra6
- 2.Sd3#
- 2.Sg6#
- 1...Ra7
- 2.Sd3#
- 2.Sg6#
- 1...d3
- 2.Sg6#
- 2.Rexe3#
- 2.Rfxe3#
- 1...Bxd5!
- threat
- 1.Bxa2+?
- 1...Sd5
- 2.Sc3#
- 1...Ke4!
- 1...Sd5
- 1.Bb3+?
- 1...Sd5
- 2.Sc1#
- 2.Sg1#
- 2.Sc3#
- 2.Sg3#
- 2.Sxd4#
- 2.Sf4#
- 1...Ke4!
- 1...Sd5
- 1.Bc4+?
- 1...Sd5
- 2.Sc3#
- 1...Ke4!
- 1...Sd5
- 1.Bc6+?
- 1...Sd5
- 2.Sc3#
- 1...Bd5!
- 1...Sd5
- 1.Bb7+?
- 1...Sd5
- 2.Sc3#
- 1...Bd5!
- 1...Sd5
- 1.Ba8+?
- 1...Sd5
- 2.Sc3#
- 1...Bd5!
- 1...Sd5
- 1.Bf8?
- threat
- 2.Bd6#
- 2.Qxd4#
- 2.Qd6#
- 1...Bxd5
- 2.Qxd4#
- 1...Sxd5
- 2.Sc3#
- 2.Qxd4#
- 1...exd5
- 2.Qe7#
- 1...f5
- 2.Bg7#
- 2.Qxd4#
- 1...Rd3
- 2.Bd6#
- 2.Qd6#
- 1...Ra4
- 2.Bd6#
- 2.Qd6#
- 1...Ra6
- 2.Qxd4#
- 1...Sc4
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 2.Qxd4#
- 1...d3
- 2.Bd6#
- 2.Rxe3#
- 2.Qd4#
- 2.Qd6#
- 1...Sf5!
- threat
- 1.Sc3?
- Keys
- 1.Rf4!
- threat
- 2.Re4#
- 1...Sd1+
- 2.Bb3#
- 1...Sf1+
- 2.Bb3#
- 1...Sg2+
- 2.Bb3#
- 1...Sc4+
- 2.Bf3#
- 1...Sxg4+
- 2.Bb3#
- 1...Sxd5+
- 2.Sc3#
- 1...Sf5+
- 2.Bb3#
- 1...Bxd5
- 2.Qc7#
- 1...Bxf4
- 2.Bxf4#
- 1...exd5
- 2.Qe7#
- 1...f5
- 2.Bg7#
- threat
- 1.Rf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 2
- Sets
- B(c);N_GUARD::B(H)
- B(c);N_GUARD::B(H),XB(c)
- S(e);P_PINR(C),P_SPINS(e),XB(G)::R(A)+S(B)
- P(f);N_GUARD,S_CUTR(d)::R(C),XS(e)
- P(h);OGATEB,P_SPINP(h),SBLOCK,XB(G)::QAR2(F)
- P(i);OGATEB::B(H)
- Tries
- Try
- S(B);P_PINS(e)
- Threat
- DUALS(4)
- Vars
- B(a);P_SPINB(a),XB(G)::QAB(F)
- P(h);OGATEB,P_SPINP(h),XB(G)::QAR2(F)
- P(i);OGATEB::B(H)
- R(d);::QAB(F)
- Refutation
- R(d);XS(B)
- Try
- S(B);P_PINS(e)
- Threat
- DUALS(4)
- Vars
- P(h);OGATEB,P_SPINP(h),SBLOCK,XB(G)::QAR2(F)
- P(i);OGATEB::B(H)
- R(d);::B(H)
- Refutation
- B(c);XS(B)
- Try
- S(B);P_PINS(e)
- Threat
- DUALS(2)
- Vars
- B(c);OGATE,XS(B)::B(H),XB(c)
- P(h);OGATEB,P_SPINP(h),XB(G)::QAR2(F)
- P(i);OGATEB::B(H)
- P(b);::S(B)
- R(d);::S(B)
- Refutation
- B(a);P_SPINB(a),XB(G)
- Try
- B(G);CHECK,XB(a)
- Vars
- S(e);P_PINR(C),P_SPINS(e)::R(A)+S(B)
- Refutation
- K(g);P-FLIGHT
- Try
- B(G);CHECK
- Refutation
- K(g);P-FLIGHT
- Try
- B(G);CHECK
- Vars
- S(e);P_PINR(C),P_SPINS(e)::R(A)+S(B)
- Refutation
- K(g);P-FLIGHT
- Try
- B(G);CHECK
- Vars
- S(e);P_PINR(C),P_SPINS(e),S_CUTB(a)::R(A)+S(B)
- Refutation
- B(a);P_SPINB(a)
- Try
- B(G);CHECK
- Vars
- S(e);P_PINR(C),P_SPINS(e),S_CUTB(a)::R(A)+S(B)
- Refutation
- B(a);P_SPINB(a)
- Try
- B(G);CHECK
- Vars
- S(e);P_PINR(C),P_SPINS(e),S_CUTB(a)::R(A)+S(B)
- Refutation
- B(a);P_SPINB(a)
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- B(a);P_SPINB(a),XB(G)::QAB1(F),XP(f)
- P(h);OGATEB,P_SPINP(h),SBLOCK,XB(G)::QAR2(F)
- R(d);::QAB1(F),XP(f)
- Refutation
- S(e);P_PINR(C)
- Try
- Actual
- R(C);
- Threat
- R1(C)
- Vars
- S(e);CHECK,N_GUARD::QAR(F)+B(G)
- S(e);CHECK,N_GUARD,S_CUTB(a)::QAR(F)+B(G)
- S(e);CHECK,N_GUARD,XP(E)::QAR(F)+B(G)
- S(e);CHECK,P_SPINS(e),XB(G)::R(A)+S(B)
- B(a);P_SPINB(a),SBLOCK,XB(G)::QAB(F)
- B(c);OGATE,XR(C)::B(H),XB(c)
- P(h);OGATEB,P_SPINP(h),SBLOCK,XB(G)::QAR2(F)
- P(i);OGATEB::B(H)
Developed and maintained by Brian Stephenson.
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