MESON Chess Problem Database
Problem Display
PID: 42754 (1BK5/1P6/kP2QP2/2RP4/1n2N3/P7/6P1/1R6 w - - 0 1)
Doukhan, Gerard
3rd Prize, Revista Romana de Sah, 1979
#2
12 + 2
SOLUTION
- SOUND
- Tries
- 1.Sd2?
- 1...Sxd5
- 2.Qe2#
- 1...Sa2
- 2.Qe2#
- 1...Sc2
- 2.Qe2#
- 1...Sc6
- 2.Qe2#
- 1...Sd3!
- 1...Sxd5
- 1.Sf2?
- 1...Sxd5
- 2.Qe2#
- 1...Sa2
- 2.Qe2#
- 1...Sc2
- 2.Qe2#
- 1...Sc6
- 2.Qe2#
- 1...Sd3!
- 1...Sxd5
- 1.Sc3?
- 1...Sxd5
- 2.Qe2#
- 1...Sa2
- 2.Qe2#
- 1...Sc2
- 2.Qe2#
- 1...Sc6
- 2.Qe2#
- 1...Sd3!
- 1...Sxd5
- 1.Sg3?
- 1...Sxd5
- 2.Qe2#
- 1...Sa2
- 2.Qe2#
- 1...Sc2
- 2.Qe2#
- 1...Sc6
- 2.Qe2#
- 1...Sd3!
- 1...Sxd5
- 1.Sg5?
- 1...Sxd5
- 2.Qe2#
- 1...Sa2
- 2.Qe2#
- 1...Sc2
- 2.Qe2#
- 1...Sc6
- 2.Qe2#
- 1...Sd3!
- 1...Sxd5
- 1.Sd6?
- 1...Kxb6
- 2.Se4#
- 1...Sxd5
- 2.Qe2#
- 1...Sa2
- 2.Qe2#
- 1...Sc2
- 2.Qe2#
- 1...Sc6
- 2.Qe2#
- 1...Sd3!
- 1...Kxb6
- 1.Bd6?
- 1...Kxb6
- 2.Bb8#
- 1...Sxd5
- 2.b8S#
- 1...Sd3
- 2.b8S#
- 1...Sa2
- 2.b8S#
- 1...Sc2
- 2.b8S#
- 1...Sc6!
- 1...Kxb6
- 1.Qg4?
- 1...Kxb6
- 2.Qe6#
- 1...Sxd5
- 2.Qe2#
- 1...Sc6
- 2.Qe2#
- 1...Sa2
- 2.Qe2#
- 1...Sc2
- 2.Qe2#
- 1...Sd3!
- 1...Kxb6
- 1.Qf5?
- 1...Kxb6
- 2.Qe6#
- 1...Sxd5
- 2.Qf1#
- 1...Sc6
- 2.Qf1#
- 1...Sa2
- 2.Qf1#
- 1...Sc2
- 2.Qf1#
- 1...Sd3!
- 1...Kxb6
- 1.Qd7?
- threat
- 2.Qb5#
- 1...Kxb6
- 2.Qb5#
- 2.Qc6#
- 2.Qe6#
- 2.Qd6#
- 1...Sc6!
- threat
- 1.Qe8?
- threat
- 2.Qb5#
- 1...Kxb6
- 2.Qb5#
- 2.Qc6#
- 2.Qe6#
- 1...Sc6!
- threat
- 1.d6?
- 1...Kxb6
- 2.d7#
- 1...Sc6
- 2.Qc4#
- 1...Sa2
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sd5!
- 1...Kxb6
- 1.Sd2?
- Keys
- 1.Qh3!
- 1...Kxb6
- 2.Qe6#
- 1...Sxd5
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...Sa2
- 2.Qd3#
- 1...Sc2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Kxb6
- 1.Qh3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(D);
- Vars
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- Refutation
- S(a);
- Try
- S(D);
- Vars
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- Refutation
- S(a);
- Try
- S(D);
- Vars
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- Refutation
- S(a);
- Try
- S(D);
- Vars
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- Refutation
- S(a);
- Try
- S(D);
- Vars
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- Refutation
- S(a);
- Try
- S(D);
- Vars
- K(b);P-FLIGHT,P_SPINS(a),XP(G)::QAR(H)+S(D)
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- Refutation
- S(a);
- Try
- B(K);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(G)::QAR(H)+B(K)
- S(a);XP(F)::P=S
- S(a);::P=S
- Refutation
- S(a);
- Try
- Q(H);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(G)::QAR(H)
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- Refutation
- S(a);
- Try
- Q(H);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(G)::QAR(H)
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- Refutation
- S(a);
- Try
- Q(H);
- Threat
- QAB1(H)
- Refutation
- S(a);
- Try
- Q(H);
- Threat
- QAB1(H)
- Refutation
- S(a);
- Try
- P(F);
- Vars
- K(b);P-FLIGHT,P_SPINS(a),XP(G)::QAR(H)+P(F)
- S(a);::QAB(H)
- Refutation
- S(a);
- Try
- Actual
- Q(H);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(G)::QAR(H)
- S(a);N_GUARD,XP(F)::QAB(H)
- S(a);N_GUARD::QAB(H)
- S(a);N_GUARD::QAB(H),XS(a)
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