MESON Chess Problem Database
Problem Display
PID: 125383 (n7/3p2p1/2p1ppQ1/2pk3N/2Np4/7n/3K3B/4RB1b w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Source?, 1980
#2
7 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bg2
- 2.Qxg2#
- 1...Be4
- 2.Qxe4#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Sf4#
- 1...Sb6
- 2.Sxb6#
- 1...Sc7
- 2.Sb6#
- 1...d3
- 2.Qxd3#
- 1...e5
- 2.Qf7#
- 1...f5
- 2.Re5#
- 1...Bg2
- Tries
- 1.Qd3?
- threat
- 2.Se3#
- 1...Sf4
- 2.Sxf4#
- 1...e5!
- threat
- 1.Qf5+?
- 1...e5
- 2.Qxd7#
- 1...exf5!
- 1...e5
- 1.Qf7?
- threat
- 2.Qxd7#
- 1...Sb6
- 2.Sxb6#
- 1...d6
- 2.Qxe6#
- 1...d3!
- threat
- 1.Qe8?
- threat
- 2.Qxd7#
- 1...Sb6
- 2.Sxb6#
- 1...d6
- 2.Qxe6#
- 1...d3!
- threat
- 1.Qg3?
- threat
- 2.Qd6#
- 1...d3
- 2.Qxd3#
- 1...Sf4
- 2.Sxf4#
- 1...d6
- 2.Qxd6#
- 1...e5!
- threat
- 1.Qg5+?
- 1...Sxg5
- 2.Sf4#
- 1...fxg5
- 2.Re5#
- 1...f5
- 2.Re5#
- 1...e5!
- 1...Sxg5
- 1.Qxf6?
- threat
- 2.Re5#
- 2.Qe5#
- 1...gxf6
- 2.Sxf6#
- 1...Be4
- 2.Qe5#
- 1...e5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qd6#
- 2.Qf7#
- 1...d6
- 2.Qxe6#
- 1...d3!
- threat
- 1.Qxg7?
- threat
- 2.Sxf6#
- 2.Qxd7#
- 1...e5
- 2.Qxd7#
- 2.Qf7#
- 2.Qg8#
- 1...Sb6
- 2.Sxb6#
- 2.Sxf6#
- 1...f5
- 2.Sf6#
- 2.Re5#
- 2.Qe5#
- 2.Qxd7#
- 1...d6
- 2.Sxf6#
- 1...d3!
- threat
- 1.Qd3?
- Keys
- 1.Qg4!
- 1...Bf3
- 2.Qxf3#
- 1...Bg2
- 2.Qxg2#
- 1...Be4
- 2.Qxe4#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Sf4#
- 1...Sb6
- 2.Sxb6#
- 1...Sc7
- 2.Sb6#
- 1...d3
- 2.Se3#
- 1...e5
- 2.Qxd7#
- 1...f5
- 2.Re5#
- 1...d6
- 2.Qxe6#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...Bf3
- 1.Qg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::QAB(G),XB(a)
- B(a);N_GUARD::QAB1(G),XB(a)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(k);N_GUARD::S(E),XS(k)
- S(k);N_GUARD::S(E)
- P(c);OGATEB::QAR2(G),XP(c)
- P(g);OGATEB::QAB(G)
- P(h);N_GUARD::R1(A)
- Tries
- Try
- Q(G);P_PINP(c)
- Threat
- S(E)
- Vars
- S(b);N_GUARD::S(F),XS(b)
- Refutation
- P(g);
- Try
- Q(G);CHECK
- Vars
- P(g);OGATE,P_SPINP(g)::QAR2(G),XP(i)
- Refutation
- P(g);XQ(G)
- Try
- Q(G);P_PINP(g)
- Threat
- QAR2(G),XP(i)
- Vars
- S(k);N_GUARD::S(E),XS(k)
- P(i);N_GUARD::QAB1(G),XP(g)
- Refutation
- P(c);
- Try
- Q(G);
- Threat
- QAR2(G),XP(i)
- Vars
- S(k);N_GUARD::S(E),XS(k)
- P(i);N_GUARD::QAB1(G),XP(g)
- Refutation
- P(c);
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- P(c);OGATEB::QAR2(G),XP(c)
- S(b);N_GUARD::S(F),XS(b)
- P(i);::QAR1(G),XP(i)
- Refutation
- P(g);
- Try
- Q(G);CHECK
- Vars
- S(b);XQ(G)::S(F)
- P(h);N_GUARD,XQ(G)::R1(A)
- P(h);N_GUARD,P_SPINP(h)::R1(A)
- Refutation
- P(g);P_SPINP(g)
- Try
- Q(G);XP(h)
- Threat
- DUALS(2)
- Vars
- P(j);XQ(G)::S(F),XP(j)
- B(a);::QAR1(G)
- P(i);N_GUARD::QAB1(G),XP(g)
- Refutation
- P(c);
- Try
- Q(G);XP(j)
- Threat
- DUALS(2)
- Vars
- P(i);::S(F),XP(h)
- Refutation
- P(c);
- Try
- Actual
- Q(G);
- Vars
- B(a);N_GUARD::QAB(G),XB(a)
- B(a);N_GUARD::QAB1(G),XB(a)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(k);N_GUARD::S(E),XS(k)
- S(k);N_GUARD::S(E)
- P(c);N_GUARD::S(E)
- P(g);OGATE::QAR2(G),XP(i)
- P(h);N_GUARD::R1(A)
- P(i);N_GUARD::QAB1(G),XP(g)
- P(j);N_GUARD::S(F),XP(h)
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