MESON Chess Problem Database
Problem Display
PID: 121901 (3R4/Q7/2pBr1p1/2PkP1P1/2n1p1N1/7B/1P2NP2/2K5 w - - 0 1)
Doukhan, Gerard
Source?, 1980
#2
12 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxe5
- 2.Sf6#
- 1...Rf6
- 2.Sxf6#
- 1...Re7
- 2.Sf6#
- 1...Re8
- 2.Sf6#
- 1...Sxb2
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sa5
- 2.Se3#
- 1...Sxe5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...e3
- 2.Bg2#
- 1...Rxe5
- Tries
- 1.Qa2?
- threat
- 2.Se3#
- 1...e3
- 2.Bg2#
- 1...Rxd6!
- threat
- 1.Qa4?
- 1...Rxe5
- 2.Sf6#
- 1...Sxb2
- 2.Sc3#
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Sxe5
- 2.Sc3#
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Sxd6
- 2.Qd4#
- 1...Rf6
- 2.Sxf6#
- 1...Re7
- 2.Sf6#
- 1...Re8
- 2.Sf6#
- 1...e3
- 2.Bg2#
- 1...Sd2
- 2.Sc3#
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Sa3
- 2.Sc3#
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Se3
- 2.Sc3#
- 2.Sf4#
- 2.Sxe3#
- 2.Qd4#
- 1...Sa5
- 2.Sc3#
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Sb6
- 2.Sc3#
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Rxd6!
- 1...Rxe5
- 1.Qf7?
- threat
- 2.Sf6#
- 1...Sxb2
- 2.Se3#
- 1...Sxe5
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sa5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...Sxd6!
- threat
- 1.f4?
- 1...Rxe5
- 2.Sf6#
- 1...Rxd6
- 2.Sf6#
- 1...Sxb2
- 2.Se3#
- 1...Sxe5
- 2.Se3#
- 1...Sxd6
- 2.Se3#
- 1...Rf6
- 2.Sxf6#
- 1...Re7
- 2.Sf6#
- 1...Re8
- 2.Sf6#
- 1...Sd2
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sa5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...e3
- 2.Bg2#
- 1...exf4 ep!
- 1...Rxe5
- 1.Qa2?
- Keys
- 1.b4!
- 1...Rxe5
- 2.Sf6#
- 1...Rxd6
- 2.Qf7#
- 1...Sxe5
- 2.Se3#
- 1...Sxd6
- 2.Qa2#
- 1...Rf6
- 2.Sxf6#
- 1...Re7
- 2.Sf6#
- 1...Re8
- 2.Sf6#
- 1...Sb2
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sa5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...e3
- 2.Bg2#
- 1...Rxe5
- 1.b4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD,XP(H)::S(F)
- R(e);N_GUARD::S(F),XR(e)
- R(e);N_GUARD::S(F)
- S(a);N_GUARD,XP(B)::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD,XP(H)::S(F)
- P(b);OGATEB::B(E)
- Tries
- Try
- Q(K);P_PINS(a)
- Threat
- S(F)
- Vars
- P(b);OGATEB::B(E)
- Refutation
- R(e);P_SPINR(e),XB(J)
- Try
- Q(K);
- Vars
- R(e);N_GUARD,XP(H)::S(F)
- S(a);OGATE,P_SPINS(a),XB(J)::QAR1(K)
- R(e);N_GUARD::S(F),XR(e)
- R(e);N_GUARD::S(F)
- P(b);OGATEB::B(E)
- Refutation
- R(e);P_SPINR(e),XB(J)
- Try
- Q(K);P_PINR(e)
- Threat
- S(F)
- Vars
- S(a);N_GUARD,XP(B)::S(F)
- S(a);N_GUARD,XP(H)::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- Refutation
- S(a);P_SPINS(a),XB(J)
- Try
- P(D);
- Vars
- R(e);N_GUARD,XP(H)::S(F)
- R(e);N_GUARD,P_SPINR(e),XB(J)::S(F)
- S(a);N_GUARD,XP(B)::S(F)
- S(a);N_GUARD,XP(H)::S(F)
- S(a);N_GUARD,P_SPINS(a),XB(J)::S(F)
- R(e);N_GUARD::S(F),XR(e)
- R(e);N_GUARD::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- P(b);OGATEB::B(E)
- Refutation
- P(b);EP,XP(D)
- Try
- Actual
- P(B);
- Vars
- R(e);N_GUARD,XP(H)::S(F)
- R(e);OGATEB,P_SPINR(e),XB(J)::QAB(K)
- S(a);N_GUARD,XP(H)::S(F)
- S(a);OGATEB,P_SPINS(a),XB(J)::QAB(K)
- R(e);N_GUARD::S(F),XR(e)
- R(e);N_GUARD::S(F)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- P(b);OGATEB::B(E)
Developed and maintained by Brian Stephenson.
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