MESON Chess Problem Database
Problem Display
PID: 99743 (5B2/p7/Pb1n4/3PQ3/2kp4/pR1NP2B/K7/8 w - - 0 1)
Lider, Valentin Viktorovich
Magyar Sakkelet, 1977
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ba5
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bd8
- 2.Qxd4#
- 1...Ba5
- Tries
- 1.Sb2+?
- 1...Kc5
- 2.Bxd6#
- 2.Qxd4#
- 2.Qxd6#
- 2.exd4#
- 1...axb2!
- 1...Kc5
- 1.Be6?
- 1...dxe3
- 2.Qc3#
- 1...Ba5
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bd8
- 2.Qxd4#
- 1...Se4
- 2.d6#
- 1...Sb5
- 2.d6#
- 1...Sf5
- 2.d6#
- 1...Sb7
- 2.d6#
- 1...Sf7
- 2.d6#
- 1...Sc8
- 2.d6#
- 1...Se8
- 2.d6#
- 1...Bc5!
- 1...dxe3
- 1.Bd7?
- 1...dxe3
- 2.Rc3#
- 1...Ba5
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bd8
- 2.Qxd4#
- 1...Se4
- 2.Bb5#
- 1...Sb5
- 2.Bxb5#
- 1...Sf5
- 2.Bb5#
- 1...Sb7
- 2.Bb5#
- 1...Sf7
- 2.Bb5#
- 1...Sc8
- 2.Bb5#
- 1...Se8
- 2.Bb5#
- 1...Bc5!
- 1...dxe3
- 1.Sb2+?
- Keys
- 1.Bf1!
- 1...dxe3
- 2.Rb4#
- 1...Bc5
- 2.Sb2#
- 1...Ba5
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bd8
- 2.Qxd4#
- 1...Se4
- 2.Sb2#
- 1...Sb5
- 2.Sb2#
- 1...Sf5
- 2.Sb2#
- 1...Sb7
- 2.Sb2#
- 1...Sf7
- 2.Sb2#
- 1...Sc8
- 2.Sb2#
- 1...Se8
- 2.Sb2#
- 1...dxe3
- 1.Bf1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- B(d);N_GUARD::QAR1(G),XP(c)
- Tries
- Try
- S(C);CHECK
- Refutation
- P(a);XS(C)
- Try
- B(E);
- Vars
- P(c);OGATE,XP(D)::QAR1(G)
- B(d);N_GUARD::QAR1(G),XP(c)
- S(e);OGATE::B(E)+P(F)
- Refutation
- B(d);
- Try
- B(E);
- Vars
- P(c);N_GUARD,XP(D)::R1(B)
- B(d);N_GUARD::QAR1(G),XP(c)
- S(e);N_GUARD::B(E)
- S(e);N_GUARD::B(E),XS(e)
- Refutation
- B(d);
- Try
- Actual
- B(E);
- Vars
- P(c);XP(D)::R1(B)
- B(d);SBLOCK::B(E)+S(C),DCHECK
- B(d);N_GUARD::QAR1(G),XP(c)
- S(e);::B(E)+S(C),DCHECK
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