MESON Chess Problem Database
Problem Display
PID: 61414 (2Q5/4K2P/3pn2N/1p1Bkp2/1r3N2/B1Pn4/3R3P/8 w - - 0 1)
Matthews, Robin CO
British Chess Magazine, 1950
#2
10 + 7
| 14609 | Mostly Three=Movers | 1995 |
| 56 | The Problemist | 2005 |
| 56 | The Problemist | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Bxd6#
- 1...Rb2
- 2.Bxd6#
- 1...Rb3
- 2.Bxd6#
- 1...Ra4
- 2.Bxd6#
- 1...Rc4
- 2.Bxd6#
- 1...Rd4
- 2.Bxd6#
- 1...Re4
- 2.Bxd6#
- 1...Rxf4
- 2.Qxe6#
- 1...Sc1
- 2.Sg6#
- 1...Se1
- 2.Sg6#
- 1...Sb2
- 2.Sg6#
- 1...Sf2
- 2.Sg6#
- 1...Sdxf4
- 2.Sf7#
- 1...Sdc5
- 2.Sg6#
- 1...Sexf4
- 2.Qxf5#
- 1...Sec5
- 2.Qxf5#
- 1...Sg5
- 2.Qxf5#
- 1...Sc7
- 2.Qxf5#
- 1...Sd8
- 2.Qxf5#
- 1...Sf8
- 2.Qxf5#
- 1...Rb1
- Tries
- 1.Bxb4?
- threat
- 2.Bxd6#
- 1...Sxb4
- 2.Sg6#
- 1...Sexf4
- 2.Qxf5#
- 1...Sdc5
- 2.Sg6#
- 1...Sec5
- 2.Qxf5#
- 1...Kxf4!
- threat
- 1.Bh1?
- threat
- 2.Sxd3#
- 2.Sg6#
- 1...Rxf4
- 2.Sf7#
- 2.Bxd6#
- 2.Qxe6#
- 1...Sdxf4
- 2.Sf7#
- 1...Sexf4
- 2.Sf7#
- 2.Qxf5#
- 2.Qh8#
- 2.h8Q#
- 2.h8B#
- 1...Rd4
- 2.Sg6#
- 1...Re4
- 2.Bxd6#
- 1...Sc1
- 2.Sg6#
- 1...Se1
- 2.Sg6#
- 1...Sb2
- 2.Sg6#
- 1...Sf2
- 2.Sg6#
- 1...Sdc5
- 2.Sg6#
- 1...Sec5
- 2.Sg6#
- 2.Qxf5#
- 1...Sf8
- 2.Sxd3#
- 2.Qxf5#
- 1...Kxf4!
- threat
- 1.Bg2?
- threat
- 2.Sxd3#
- 2.Sg6#
- 1...Rxf4
- 2.Sf7#
- 2.Bxd6#
- 2.Qxe6#
- 1...Sdxf4
- 2.Sf7#
- 1...Sexf4
- 2.Sf7#
- 2.Qxf5#
- 2.Qh8#
- 2.h8Q#
- 2.h8B#
- 1...Rd4
- 2.Sg6#
- 1...Re4
- 2.Bxd6#
- 1...Sc1
- 2.Sg6#
- 1...Se1
- 2.Sg6#
- 1...Sb2
- 2.Sg6#
- 1...Sf2
- 2.Sg6#
- 1...Sdc5
- 2.Sg6#
- 1...Sec5
- 2.Sg6#
- 2.Qxf5#
- 1...Sf8
- 2.Sxd3#
- 2.Qxf5#
- 1...Kxf4!
- threat
- 1.Bf3?
- threat
- 2.Sxd3#
- 2.Sg6#
- 1...Rxf4
- 2.Sf7#
- 2.Bxd6#
- 2.Qxe6#
- 1...Sdxf4
- 2.Sf7#
- 1...Sexf4
- 2.Sf7#
- 2.Qxf5#
- 2.Qh8#
- 2.h8Q#
- 2.h8B#
- 1...Rd4
- 2.Sg6#
- 1...Re4
- 2.Bxd6#
- 1...Sc1
- 2.Sg6#
- 1...Se1
- 2.Sg6#
- 1...Sb2
- 2.Sg6#
- 1...Sf2
- 2.Sg6#
- 1...Sdc5
- 2.Sg6#
- 1...Sec5
- 2.Sg6#
- 2.Qxf5#
- 1...Sf8
- 2.Sxd3#
- 2.Qxf5#
- 1...Kxf4!
- threat
- 1.Re2+?
- 1...Re4
- 2.Bxd6#
- 1...Kxf4!
- 1...Re4
- 1.Qb7?
- threat
- 2.Sxd3#
- 2.Sg6#
- 1...Rxf4
- 2.Sf7#
- 2.Bxd6#
- 1...Sdxf4
- 2.Sf7#
- 1...Sexf4
- 2.Sf7#
- 2.h8Q#
- 2.h8B#
- 1...Rd4
- 2.Sg6#
- 2.Bxd6#
- 1...Sc1
- 2.Sg6#
- 1...Se1
- 2.Sg6#
- 1...Sb2
- 2.Sg6#
- 1...Sf2
- 2.Sg6#
- 1...Sdc5
- 2.Sg6#
- 1...Sec5
- 2.Sg6#
- 1...Sf8
- 2.Sxd3#
- 1...Kxf4!
- threat
- 1.Qc4?
- threat
- 2.Sxd3#
- 2.Sg6#
- 2.Sf7#
- 2.Re2#
- 1...Rxc4
- 2.Bxd6#
- 1...Sdxf4
- 2.Sf7#
- 1...Sexf4
- 2.Sf7#
- 2.h8Q#
- 2.h8B#
- 1...Sd4
- 2.Sxd3#
- 2.Sg6#
- 1...Rb2
- 2.Sxd3#
- 2.Sg6#
- 2.Sf7#
- 2.Bxd6#
- 1...Sc1
- 2.Sg6#
- 2.Sf7#
- 1...Se1
- 2.Sg6#
- 2.Sf7#
- 2.Re2#
- 1...Sb2
- 2.Sg6#
- 2.Sf7#
- 2.Re2#
- 1...Sf2
- 2.Sg6#
- 2.Sf7#
- 1...Sdc5
- 2.Sg6#
- 2.Sf7#
- 1...Sec5
- 2.Sg6#
- 2.Sf7#
- 2.h8Q#
- 2.h8B#
- 1...Sg5
- 2.Sxd3#
- 2.Sg6#
- 2.h8Q#
- 2.h8B#
- 1...Sd8
- 2.Sxd3#
- 2.Sg6#
- 2.Re2#
- 2.h8Q#
- 2.h8B#
- 1...Sf8
- 2.Sxd3#
- 2.Sf7#
- 2.Re2#
- 2.h8Q#
- 2.h8B#
- 1...bxc4!
- threat
- 1.Qc6?
- threat
- 2.Sxd3#
- 2.Sg6#
- 2.Qxd6#
- 1...Rxf4
- 2.Sf7#
- 2.Bxd6#
- 2.Qxd6#
- 1...Sdxf4
- 2.Sf7#
- 2.Qxd6#
- 1...Sexf4
- 2.Sf7#
- 2.Qxd6#
- 2.h8Q#
- 2.h8B#
- 1...Rd4
- 2.Sg6#
- 2.Bxd6#
- 2.Qxd6#
- 1...Sc1
- 2.Sg6#
- 2.Qxd6#
- 1...Se1
- 2.Sg6#
- 2.Qxd6#
- 1...Sb2
- 2.Sg6#
- 2.Qxd6#
- 1...Sf2
- 2.Sg6#
- 2.Qxd6#
- 1...Sdc5
- 2.Sg6#
- 2.Qxd6#
- 1...Sec5
- 2.Sg6#
- 2.Qxd6#
- 1...Sf8
- 2.Sxd3#
- 2.Qxd6#
- 1...Kxf4!
- threat
- 1.Qa8?
- threat
- 2.Sxd3#
- 2.Sg6#
- 1...Rxf4
- 2.Sf7#
- 2.Bxd6#
- 1...Sdxf4
- 2.Sf7#
- 1...Sexf4
- 2.Sf7#
- 2.h8Q#
- 2.h8B#
- 1...Rd4
- 2.Sg6#
- 2.Bxd6#
- 1...Sc1
- 2.Sg6#
- 1...Se1
- 2.Sg6#
- 1...Sb2
- 2.Sg6#
- 1...Sf2
- 2.Sg6#
- 1...Sdc5
- 2.Sg6#
- 1...Sec5
- 2.Sg6#
- 1...Sf8
- 2.Sxd3#
- 1...Kxf4!
- threat
- 1.h8Q+?
- 1...Sg7
- 2.Qxf5#
- 1...Kxf4!
- 1...Sg7
- 1.h8S?
- threat
- 2.Shg6#
- 1...Rxf4
- 2.Qxe6#
- 1...Sdxf4
- 2.S6f7#
- 2.S8f7#
- 1...Sexf4
- 2.Qxf5#
- 1...Sf8
- 2.Qxf5#
- 1...Kxf4!
- threat
- 1.h8B+?
- 1...Sg7
- 2.Qxf5#
- 1...Kxf4!
- 1...Sg7
- 1.Bxb4?
- Keys
- 1.Qg8!
- 1...Kxf4
- 2.Qg3#
- 1...Rxf4
- 2.Qxe6#
- 1...Sdxf4
- 2.Sf7#
- 1...Sexf4
- 2.h8Q#
- 2.h8B#
- 1...Sd4
- 2.Sxd3#
- 2.Sg6#
- 1...Rb1
- 2.Bxd6#
- 1...Rb2
- 2.Bxd6#
- 1...Rb3
- 2.Bxd6#
- 1...Ra4
- 2.Bxd6#
- 1...Rc4
- 2.Bxd6#
- 1...Rd4
- 2.Bxd6#
- 1...Re4
- 2.Bxd6#
- 1...Sc1
- 2.Sg6#
- 1...Se1
- 2.Sg6#
- 1...Sb2
- 2.Sg6#
- 1...Sf2
- 2.Sg6#
- 1...Sdc5
- 2.Sg6#
- 1...Sec5
- 2.Sg6#
- 1...Sg5
- 2.Sxd3#
- 2.Sg6#
- 1...Sc7
- 2.Sxd3#
- 2.Sg6#
- 1...Sg7
- 2.Sxd3#
- 2.Sg6#
- 1...Sd8
- 2.Sxd3#
- 2.Sg6#
- 1...Sf8
- 2.Sxd3#
- 1...Kxf4
- 1.Qg8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(b);OGATE::B(C),XP(f)
- R(b);SBLOCK,XS(E)::QAR1(J),XS(g)
- S(a);::S(E)
- S(a);SBLOCK,XS(E)::S(G)
- S(g);OGATE,XS(E)::QAR1(J),XP(e)
- S(g);OGATE::QAR1(J),XP(e)
- Tries
- Try
- B(C);XR(b)
- Threat
- B(C),XP(f)
- Vars
- S(a);XB(C)::S(E)
- S(g);OGATE,XS(E)::QAR1(J),XP(e)
- S(a);::S(E)
- S(g);OGATE::QAR1(J),XP(e)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- S(a);SBLOCK,XS(E)::S(G)
- R(b);::S(E)
- R(b);OGATE::B(C),XP(f)
- S(a);::S(E)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- S(a);SBLOCK,XS(E)::S(G)
- R(b);::S(E)
- R(b);OGATE::B(C),XP(f)
- S(a);::S(E)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- S(a);SBLOCK,XS(E)::S(G)
- R(b);::S(E)
- R(b);OGATE::B(C),XP(f)
- S(a);::S(E)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- R(A);CHECK
- Vars
- R(b);OGATE,P_SPINR(b)::B(C),XP(f)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- S(a);SBLOCK,XS(E)::S(G)
- S(a);::S(E)
- S(g);::S(E)
- S(g);::S(E),XS(a)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- R(b);OGATE,XQ(J)::B(C),XP(f)
- S(a);XS(E)::S(G)
- Refutation
- P(c);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(3)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- S(a);SBLOCK,XS(E)::S(G)
- S(a);::S(E)
- S(g);::S(E)
- S(g);::S(E),XS(a)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- P(I);CHECK
- Vars
- S(g);OGATE,P_SPINS(g)::QAR1(J),XP(e)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- P(I);
- Threat
- S(I)
- Vars
- R(b);SBLOCK,XS(E)::QAR1(J),XS(g)
- S(g);OGATE,XS(E)::QAR1(J),XP(e)
- S(g);OGATE::QAR1(J),XP(e)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- P(I);CHECK
- Vars
- S(g);OGATE,P_SPINS(g)::QAR1(J),XP(e)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Actual
- Q(J);
- Vars
- K(d);OGATEB,S_FLIGHT,XS(E)::QAB1(J)
- R(b);SBLOCK,XS(E)::QAR1(J),XS(g)
- S(a);SBLOCK,XS(E)::S(G)
- S(g);N_GUARD,SBLOCK,XS(E)::P=Q
- R(b);OGATE::B(C),XP(f)
- S(a);::S(E)
- S(g);::S(E)
- S(g);::S(E),XS(a)
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