MESON Chess Problem Database
Problem Display
PID: 89889 (3R2Q1/1pB4n/2p2P2/1pk2b2/6R1/P4N2/N1p5/2K5 w - - 0 1)
Krikheli, Iosif Mikhailovich
Die Schwalbe, 1969
#2
9 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sg5
- 2.Qf8#
- 1...Sxf6
- 2.Qf8#
- 1...Sf8
- 2.Qxf8#
- 1...b4
- 2.Qc4#
- 1...b6
- 2.Bd6#
- 1...Sg5
- Tries
- 1.Sd2?
- threat
- 2.Sb3#
- 1...b4
- 2.Qc4#
- 1...Be6!
- threat
- 1.Se5?
- 1...Bxg4
- 2.Sd3#
- 1...Sxf6
- 2.Qf8#
- 1...b4
- 2.Qc4#
- 1...Bd3
- 2.Sxd3#
- 2.Sd7#
- 1...Be6
- 2.Sd3#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sd3#
- 2.Sxd7#
- 1...Bc8
- 2.Sd3#
- 1...Sg5
- 2.Qf8#
- 1...Sf8
- 2.Qxf8#
- 1...b6
- 2.Bd6#
- 1...Be4!
- 1...Bxg4
- 1.Sg5?
- 1...Bxg4
- 2.Se4#
- 1...Sxg5
- 2.Qf8#
- 1...Sxf6
- 2.Qf8#
- 1...b4
- 2.Qc4#
- 1...Be4
- 2.Sxe4#
- 1...Bd3
- 2.Se6#
- 1...Be6
- 2.Sxe6#
- 1...Bg6
- 2.Se6#
- 1...Bc8
- 2.Se4#
- 1...Sf8
- 2.Qxf8#
- 1...b6
- 2.Bd6#
- 1...Bd7!
- 1...Bxg4
- 1.Re4?
- threat
- 2.Re5#
- 2.Qg1#
- 1...Sxf6
- 2.Qg1#
- 2.Qf8#
- 1...b4
- 2.Re5#
- 2.Qc4#
- 1...Bg4
- 2.Re5#
- 1...Be6
- 2.Qg1#
- 1...Bg6
- 2.Re5#
- 1...Bd7
- 2.Re5#
- 1...Sg5
- 2.Re5#
- 2.Qf8#
- 1...Bxe4!
- threat
- 1.Qb3?
- threat
- 2.Qc3#
- 2.Qe3#
- 2.Qb4#
- 1...Bxg4
- 2.Qxc2#
- 2.Qc3#
- 2.Qb4#
- 1...b4
- 2.Qc4#
- 2.Qxb4#
- 1...Be4
- 2.Qc3#
- 2.Qb4#
- 1...Bd3
- 2.Qb4#
- 1...Be6
- 2.Qe3#
- 2.Qb4#
- 1...Bd7!
- threat
- 1.Qg5?
- threat
- 2.Qe3#
- 2.Qxf5#
- 1...Sxf6
- 2.Qe3#
- 1...b4
- 2.Qxf5#
- 1...Sxg5!
- threat
- 1.Sd2?
- Keys
- 1.Sd4!
- threat
- 2.Sb3#
- 1...Be6
- 2.Sxe6#
- 1...b4
- 2.axb4#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- S(g);N_GUARD::QAB(I)
- S(g);N_GUARD,XP(F)::QAB(I)
- S(g);N_GUARD::QAB(I),XS(g)
- P(b);N_GUARD::QAR1(I)
- P(f);SBLOCK::B(G)
- Tries
- Try
- S(D);
- Threat
- S(D)
- Vars
- P(b);N_GUARD::QAR1(I)
- Refutation
- B(d);
- Try
- S(D);
- Vars
- B(d);N_GUARD,XR(E)::S(D)
- S(g);N_GUARD,XP(F)::QAB(I)
- P(b);N_GUARD::QAR1(I)
- B(d);N_GUARD::S(D)
- S(g);N_GUARD::QAB(I)
- S(g);N_GUARD::QAB(I),XS(g)
- P(f);SBLOCK::B(G)
- Refutation
- B(d);
- Try
- S(D);
- Vars
- B(d);N_GUARD,XR(E)::S(D)
- S(g);N_GUARD,XS(D)::QAB(I)
- S(g);N_GUARD,XP(F)::QAB(I)
- P(b);N_GUARD::QAR1(I)
- B(d);N_GUARD::S(D),XB(d)
- B(d);N_GUARD::S(D)
- S(g);N_GUARD::QAB(I),XS(g)
- P(f);SBLOCK::B(G)
- Refutation
- B(d);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- B(d);::R(E)
- B(d);::QAB(I)
- Refutation
- B(d);XR(E)
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- B(d);::QAB1(I)
- Refutation
- B(d);
- Try
- Q(I);P_PINB(d)
- Threat
- DUALS(2)
- Vars
- S(g);XP(F)::QAB(I)
- P(b);::QAR(I),XB(d)
- Refutation
- S(g);N_SPINB(d),XQ(I)
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- B(d);N_GUARD::S(D),XB(d)
- P(b);OGATE::P(C),XP(b)
Developed and maintained by Brian Stephenson.
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