MESON Chess Problem Database
Problem Display
PID: 180323 (2R5/1P2Qp2/N4p2/rr1k4/B1Rp1P2/8/8/2n4K w - - 0 1)
Lider, Valentin Viktorovich
Europe Echecs, 1977
#2
8 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Sxb4#
- 1...d3
- 2.Qd7#
- 1...f5
- 2.Qe5#
- 1...Rb4
- Tries
- 1.Bxb5?
- threat
- 2.Sb4#
- 2.Sc7#
- 2.R4c5#
- 2.R8c5#
- 2.Rd8#
- 1...Rxa6
- 2.R4c5#
- 2.R8c5#
- 1...Ra4
- 2.Sc7#
- 2.R4c5#
- 2.R8c5#
- 2.Rd8#
- 1...Sa2
- 2.Sc7#
- 2.R4c5#
- 2.R8c5#
- 2.Rd8#
- 1...Sb3
- 2.Sb4#
- 2.Sc7#
- 2.Rd8#
- 1...Sd3
- 2.Sc7#
- 2.Rd8#
- 1...d3
- 2.Sb4#
- 2.Sc7#
- 2.R8c5#
- 2.Rd8#
- 2.Qd7#
- 1...Rxb5!
- threat
- 1.Rxc1?
- threat
- 2.Sc7#
- 2.Rd8#
- 1...Rxb7
- 2.Bc6#
- 1...d3
- 2.Rd8#
- 1...Rc5
- 2.Sb4#
- 2.Rd8#
- 1...Rb6
- 2.Sc7#
- 1...Rxa6!
- threat
- 1.Rc2?
- threat
- 2.Sc7#
- 2.Rd8#
- 1...Rxb7
- 2.Bc6#
- 1...d3
- 2.Rd8#
- 1...Rc5
- 2.Sb4#
- 2.Rd8#
- 1...Rb6
- 2.Sc7#
- 1...Rxa6!
- threat
- 1.Qxf6?
- threat
- 2.Rxd4#
- 2.Qe5#
- 2.Qc6#
- 1...Rxa4
- 2.Qe5#
- 2.Qc6#
- 1...Rxa6
- 2.Rxd4#
- 2.Qe5#
- 1...Rc5
- 2.Rxd4#
- 1...Rb4
- 2.Qe5#
- 2.Qc6#
- 1...Rb6
- 2.Rxd4#
- 2.Qe5#
- 1...Se2
- 2.Qe5#
- 2.Qc6#
- 1...Sb3
- 2.Qe5#
- 2.Qc6#
- 1...Sd3
- 2.Rxd4#
- 2.Qc6#
- 1...d3
- 2.Rd4#
- 2.Qe5#
- 2.Qc6#
- 1...Ke4!
- threat
- 1.Qe4+?
- 1...Kd6
- 2.Rd8#
- 1...Kxe4!
- 1...Kd6
- 1.Qxf7+?
- 1...Kd6
- 2.R4c6#
- 2.R8c6#
- 2.Rd8#
- 1...Ke4!
- 1...Kd6
- 1.Bxb5?
- Keys
- 1.Rb4!
- 1...Rxa4
- 2.Rxb5#
- 1...Rxa6
- 2.Rxb5#
- 1...Rxb4
- 2.Sxb4#
- 1...Rxb7
- 2.Bc6#
- 1...Rc5
- 2.Rd8#
- 1...Rb6
- 2.Sc7#
- 1...Sa2
- 2.Bb3#
- 1...Se2
- 2.Bb3#
- 1...Sb3
- 2.Bxb3#
- 1...Sd3
- 2.Bb3#
- 1...d3
- 2.Qd7#
- 1...f5
- 2.Qe5#
- 1...Rxa4
- 1.Rb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(d);N_GUARD::S(E),XR(d)
- P(b);::QAR2(G)
- P(f);N_GUARD::QAR1(G)
- Tries
- Try
- B(B);XR(d)
- Threat
- DUALS(5)
- Refutation
- R(c);XB(B)
- Try
- R(C);XS(a)
- Threat
- DUALS(2)
- Vars
- R(d);OGATE,XP(F)::B(B)
- P(b);::R(H)
- R(d);::S(E)
- Refutation
- R(c);XS(E)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(d);OGATE,XP(F)::B(B)
- P(b);::R(H)
- R(d);::S(E)
- Refutation
- R(c);XS(E)
- Try
- Q(G);XP(f)
- Threat
- DUALS(3)
- Vars
- R(d);::R1(C),XP(b)
- Refutation
- K(e);P_SPINP(b),S_FLIGHT
- Try
- Q(G);CHECK
- Vars
- K(e);P-FLIGHT::R(H)
- Refutation
- K(e);P_SPINP(b),S_FLIGHT,XQ(G)
- Try
- Q(G);CHECK,XP(g)
- Refutation
- K(e);P_SPINP(b),S_FLIGHT
- Try
- Actual
- R(C);
- Vars
- R(c);N_GUARD,XB(B)::R(C),XR(d)
- R(c);N_GUARD,XS(E)::R(C),XR(d)
- R(d);XR(C)::S(E),XR(d)
- R(d);OGATE,XP(F)::B(B)
- R(d);::R(H)
- R(d);::S(E)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- P(b);::QAR2(G)
- P(f);N_GUARD::QAR1(G)
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