MESON Chess Problem Database
Problem Display
PID: 91109 (8/b1N5/3Pp3/1Bn5/4k1P1/2P1ppBR/6RQ/5N1K w - - 0 1)
Petkov, Petko Andonov
Die Schwalbe, 1968
#2
11 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sd3
- 2.Bc6#
- 1...fxg2+
- 2.Qxg2#
- 1...Sd3
- Tries
- 1.Be5?
- threat
- 2.Qf4#
- 1...Sd3
- 2.Bc6#
- 1...fxg2+!
- threat
- 1.Rd2?
- threat
- 2.Bc6#
- 2.Rd4#
- 1...f2
- 2.Bc6#
- 2.Qg2#
- 1...Sb3
- 2.Bd3#
- 2.Bc6#
- 1...Sd3
- 2.Bxd3#
- 2.Bc6#
- 1...Sa4
- 2.Bd3#
- 2.Bc6#
- 1...Sa6
- 2.Bd3#
- 2.Bc6#
- 1...Sb7
- 2.Bd3#
- 2.Bc6#
- 1...Sd7
- 2.Bd3#
- 2.Bc6#
- 1...e5
- 2.Bc6#
- 1...exd2!
- threat
- 1.Re2?
- threat
- 2.Sd2#
- 2.Rxe3#
- 1...fxe2
- 2.Qg2#
- 1...Sd3
- 2.Sd2#
- 2.Bc6#
- 1...Sa4
- 2.Sd2#
- 1...Sa6
- 2.Sd2#
- 1...Sb7
- 2.Sd2#
- 1...Sd7
- 2.Sd2#
- 1...Sb3!
- threat
- 1.Rh8?
- threat
- 2.Qh7#
- 1...fxg2+
- 2.Qxg2#
- 1...f2!
- threat
- 1.Be5?
- Keys
- 1.Rb2!
- threat
- 2.Rb4#
- 1...f2
- 2.Qg2#
- 1...Sb3
- 2.Qc2#
- 1...Sd3
- 2.Bc6#
- 1...Sa4
- 2.Qc2#
- 1...Sa6
- 2.Qc2#
- 1...Sb7
- 2.Qc2#
- 1...Sd7
- 2.Qc2#
- threat
- 1.Rb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- S(d);SBLOCK::B(I)
- P(b);CHECK,OGATE,XR(C)::QAB(D),XP(b)
- Tries
- Try
- B(F);
- Threat
- QAR1(D)
- Vars
- S(d);SBLOCK::B(I)
- Refutation
- P(b);CHECK,XR(C)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- P(e);::B(I)
- Refutation
- P(a);XR(C)
- Try
- R(C);P_PINP(a)
- Threat
- DUALS(2)
- Vars
- P(b);N_SPINP(a),OGATEB,XR(C)::QAB(D)
- S(d);::S(A)
- Refutation
- S(d);
- Try
- R(G);
- Threat
- QAB(D)
- Vars
- P(b);CHECK,OGATE,XR(C)::QAB(D),XP(b)
- Refutation
- P(b);
- Try
- Actual
- R(C);
- Threat
- R(C)
- Vars
- P(b);OGATEB::QAB(D)
- S(d);N_GUARD::QAB(D)
- S(d);SBLOCK::B(I)
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