MESON Chess Problem Database
Problem Display
PID: 42757 (B4K2/p1NR1P2/Rp6/2N1kbQn/1np5/2p1p3/2P3pP/6B1 w - - 0 1)
Doukhan, Gerard
1st Prize, Stosic MT, 1979-1980
#2
11 + 10
| 3752 | FIDE Album (1980-1982) | 1988 |
| 133 | The Problemist Supplement | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Rd5#
- 1...Sxc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sxa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Sf4
- 2.Qg7#
- 1...Sf6
- 2.Qg3#
- 1...e2
- 2.Bd4#
- 1...bxc5
- 2.Re6#
- 1...b5
- 2.Re6#
- 1...Sa2
- Tries
- 1.Ke7?
- 1...Sd5+
- 2.Rxd5#
- 1...Sxc2
- 2.Rd5#
- 1...Sxa6
- 2.Rd5#
- 1...bxc5
- 2.Re6#
- 1...Sa2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sg3
- 2.Qxg3#
- 1...Sf4
- 2.Qf6#
- 2.Qg7#
- 1...Sf6
- 2.Qg3#
- 1...Sg7
- 2.Qg3#
- 1...e2
- 2.Bd4#
- 1...b5
- 2.Re6#
- 1...Sc6+!
- 1...Sd5+
- 1.Rxb6?
- threat
- 2.Re6#
- 1...Sd5
- 2.Rxd5#
- 1...Sc6
- 2.Rd5#
- 1...Sf4
- 2.Qf6#
- 2.Qg7#
- 1...Sg7
- 2.Qg3#
- 1...axb6!
- threat
- 1.Rd1?
- threat
- 2.Sd7#
- 1...bxc5
- 2.Re6#
- 1...Sd5
- 2.Rxd5#
- 1...Sc6
- 2.Rd5#
- 1...Sf6
- 2.Qg3#
- 1...Sd3!
- threat
- 1.Rd6?
- 1...Kxd6
- 2.Qe7#
- 1...Sxc2
- 2.Rd5#
- 1...Sxa6
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sg3
- 2.Qxg3#
- 1...Sa2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Sf4
- 2.Qf6#
- 1...Sf6
- 2.Qg3#
- 1...Sg7
- 2.Qg3#
- 1...e2
- 2.Re6#
- 1...b5
- 2.Sd7#
- 1...bxc5!
- 1...Kxd6
- 1.Re7+?
- 1...Kd4
- 2.Bxe3#
- 2.Qxe3#
- 1...Kd6!
- 1...Kd4
- 1.Qg3+?
- 1...Kf6
- 2.Se8#
- 1...Sf4
- 2.Qg7#
- 1...Sxg3!
- 1...Kf6
- 1.h3?
- 1...Sxc2
- 2.Rd5#
- 1...Sxa6
- 2.Rd5#
- 1...bxc5
- 2.Re6#
- 1...Sd5
- 2.Rxd5#
- 1...Sa2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Sf4
- 2.Qg7#
- 1...Sf6
- 2.Bh2#
- 2.Qg3#
- 1...Sg7
- 2.Bh2#
- 1...e2
- 2.Bd4#
- 1...b5
- 2.Re6#
- 1...Sg3!
- 1...Sxc2
- 1.h4?
- 1...Sxc2
- 2.Rd5#
- 1...Sxa6
- 2.Rd5#
- 1...bxc5
- 2.Re6#
- 1...Sd5
- 2.Rxd5#
- 1...Sa2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Sf4
- 2.Qg7#
- 1...Sf6
- 2.Bh2#
- 2.Qg3#
- 1...Sg7
- 2.Bh2#
- 1...e2
- 2.Bd4#
- 1...b5
- 2.Re6#
- 1...Sg3!
- 1...Sxc2
- 1.Ke7?
- Keys
- 1.Rd4!
- 1...Kxd4
- 2.Qxe3#
- 1...Sxc2
- 2.Rd5#
- 1...Sxa6
- 2.Rd5#
- 1...bxc5
- 2.Re4#
- 1...Sd5
- 2.Rxd5#
- 1...Sg3
- 2.Qg7#
- 1...Sa2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Sf4
- 2.Qg7#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qxg7#
- 1...e2
- 2.Sd7#
- 1...b5
- 2.Re4#
- 1...Kxd4
- 1.Rd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::R1(H)
- S(d);N_GUARD,XP(B)::R1(H)
- S(d);N_GUARD::R1(H),XS(d)
- S(d);N_GUARD,XR(F)::R1(H)
- S(h);N_GUARD,SBLOCK::QAB(E)
- P(c);OGATE::B(A)
- P(i);OGATE,XS(D)::R1(F)
- P(i);OGATE::R1(F)
- Tries
- Try
- K(K);S_FLIGHT
- Vars
- S(d);CHECK,N_GUARD::R1(H),XS(d)
- S(d);N_GUARD,XP(B)::R1(H)
- S(d);N_GUARD,XR(F)::R1(H)
- P(i);OGATE,XS(D)::R1(F)
- S(d);N_GUARD::R1(H)
- S(h);N_GUARD::QAB(E),XS(h)
- S(h);N_GUARD::QAB(E)
- P(c);OGATE::B(A)
- P(i);OGATE::R1(F)
- Refutation
- S(d);CHECK
- Try
- R(F);XP(i)
- Threat
- R1(F)
- Vars
- S(d);N_GUARD::R1(H),XS(d)
- S(d);N_GUARD::R1(H)
- S(h);N_GUARD::QAB(E)
- Refutation
- P(j);XR(F)
- Try
- R(H);
- Threat
- S(D)
- Vars
- P(i);OGATE,XS(D)::R1(F)
- S(d);N_GUARD::R1(H),XS(d)
- S(d);N_GUARD::R1(H)
- S(h);N_GUARD,SBLOCK::QAB(E)
- Refutation
- S(d);
- Try
- R(H);
- Vars
- K(f);N_SPINB(g),P_SPINP(i),S_FLIGHT,XR(H)::QAB1(E)
- S(d);N_GUARD,XP(B)::R1(H)
- S(d);N_GUARD,XR(F)::R1(H)
- S(d);N_GUARD::R1(H),XS(d)
- S(h);N_GUARD::QAB(E),XS(h)
- S(d);N_GUARD::R1(H)
- S(h);N_GUARD,SBLOCK::QAB1(E)
- S(h);N_GUARD::QAB(E)
- P(c);::R1(H)
- P(i);::S(D)
- Refutation
- P(i);XS(D)
- Try
- R(H);CHECK
- Refutation
- K(f);N_SPINB(g),P_SPINP(i),S_FLIGHT
- Try
- Q(E);CHECK,N_PINB(g)
- Vars
- K(f);P_SPINP(i),S_FLIGHT::S(G)
- S(h);N_GUARD,P_SPINS(h),SBLOCK::QAB(E)
- Refutation
- S(h);XQ(E)
- Try
- P(C);
- Vars
- S(d);N_GUARD,XP(B)::R1(H)
- S(d);N_GUARD,XR(F)::R1(H)
- P(i);OGATE,XS(D)::R1(F)
- S(d);N_GUARD::R1(H),XS(d)
- S(d);N_GUARD::R1(H)
- S(h);N_GUARD,SBLOCK::QAB(E)
- S(h);N_GUARD::B(A)
- P(c);OGATE::B(A)
- P(i);OGATE::R1(F)
- Refutation
- S(h);
- Try
- P(C);
- Vars
- S(d);N_GUARD,XP(B)::R1(H)
- S(d);N_GUARD,XR(F)::R1(H)
- P(i);OGATE,XS(D)::R1(F)
- S(d);N_GUARD::R1(H),XS(d)
- S(d);N_GUARD::R1(H)
- S(h);N_GUARD,SBLOCK::QAB(E)
- S(h);N_GUARD::B(A)
- P(c);OGATE::B(A)
- P(i);OGATE::R1(F)
- Refutation
- S(h);
- Try
- Actual
- R(H);
- Vars
- K(f);N_SPINB(g),P_SPINP(c),S_FLIGHT,XR(H)::QAB1(E),XP(c)
- S(d);N_GUARD,XP(B)::R1(H)
- S(d);N_GUARD,XR(F)::R1(H)
- P(i);XS(D)::R1(H)
- S(d);N_GUARD::R1(H),XS(d)
- S(h);N_GUARD::QAB(E)
- S(d);N_GUARD::R1(H)
- S(h);N_GUARD,SBLOCK::QAB1(E)
- S(h);N_GUARD::QAB(E),XS(h)
- P(c);::S(D)
- P(i);::R1(H)
Developed and maintained by Brian Stephenson.
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