MESON Chess Problem Database
Problem Display
PID: 42547 (6K1/B1n2Nbp/7q/N2k1P2/1Q6/3b1R2/1n4R1/2r4B w - - 0 1)
Casa, Alex
1st Prize, Europe Echecs, 1969
#2
9 + 8
| 3751 | FIDE Album (1968-1970) | 1977 |
| 133 | The Problemist Supplement | 2005 |
| 702 | Phenix | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bd4
- 2.Qxd4#
- 1...Bf8
- 2.Qd4#
- 1...Bd4
- Tries
- 1.Rc2?
- threat
- 2.Rxd3#
- 1...Qxh1
- 2.Qb7#
- 1...Rxh1
- 2.Rc5#
- 1...Bxc2
- 2.Rd3#
- 1...Bc4
- 2.Rd3#
- 1...Bd4
- 2.Qxd4#
- 1...Qe3
- 2.Qb7#
- 1...Bf1
- 2.Rd3#
- 1...Be2
- 2.Rd3#
- 1...Be4
- 2.Qc5#
- 1...Bb5
- 2.Rd3#
- 1...Ba6
- 2.Rd3#
- 1...Bxf5!
- threat
- 1.Re2?
- threat
- 2.Rxd3#
- 1...Qxh1
- 2.Qd6#
- 1...Rxh1
- 2.Qc5#
- 1...Bxe2
- 2.Rd3#
- 1...Bxf5
- 2.Rd3#
- 2.Rxf5#
- 1...Bb1
- 2.Rd3#
- 1...Bc2
- 2.Rd3#
- 2.Qc5#
- 1...Bc4
- 2.Rd3#
- 2.Qc5#
- 1...Be4
- 2.Qxe4#
- 1...Bb5
- 2.Rd3#
- 2.Qe4#
- 1...Ba6
- 2.Rd3#
- 2.Qe4#
- 1...Bd4
- 2.Qxd4#
- 1...Qe3!
- threat
- 1.Rg4?
- threat
- 2.Rxd3#
- 1...Qxh1
- 2.Qd6#
- 1...Rxh1
- 2.Qc5#
- 1...Qe3
- 2.Qd6#
- 1...Bb1
- 2.Rd3#
- 1...Bf1
- 2.Rd3#
- 2.Qe4#
- 1...Bc2
- 2.Rd3#
- 2.Qc5#
- 1...Be2
- 2.Rd3#
- 2.Qe4#
- 1...Bc4
- 2.Rd3#
- 2.Qc5#
- 1...Be4
- 2.Qxe4#
- 1...Bb5
- 2.Rd3#
- 2.Qe4#
- 1...Ba6
- 2.Rd3#
- 2.Qe4#
- 1...Bd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bxf5!
- threat
- 1.Rxd3+?
- 1...Bd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Sxd3!
- 1...Bd4
- 1.Rc2?
- Keys
- 1.Rg6!
- threat
- 2.Rxd3#
- 1...Qxh1
- 2.Rd6#
- 1...Rxh1
- 2.Qb7#
- 1...Bxf5
- 2.Rd3#
- 2.Rxf5#
- 1...Bc4
- 2.Rd3#
- 2.Qb7#
- 1...Bd4
- 2.Qxd4#
- 1...Qe3
- 2.Rd6#
- 1...Bb1
- 2.Rd3#
- 1...Bf1
- 2.Rd3#
- 1...Bc2
- 2.Rd3#
- 2.Qb7#
- 1...Be2
- 2.Rd3#
- 1...Be4
- 2.Qd6#
- 1...Bb5
- 2.Rd3#
- 1...Ba6
- 2.Rd3#
- threat
- 1.Rg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 1
- Sets
- B(g);N_GUARD::QAR1(D),XB(g)
- B(g);N_GUARD::QAR1(D)
- Tries
- Try
- R(B);
- Threat
- B(A)+R(C),DCHECK,XB(c)
- Vars
- Q(e);N_GUARD,XB(A)::QAB(D)
- R(a);N_GUARD,XB(A)::R1(B)
- B(c);XR(B)::B(A)+R(C),DCHECK
- B(c);::B(A)+R(C),DCHECK
- B(g);N_GUARD::QAR1(D),XB(g)
- Q(e);N_GUARD::QAB(D)
- B(c);SBLOCK::QAR1(D)
- Refutation
- B(c);XP(F)
- Try
- R(B);
- Threat
- B(A)+R(C),DCHECK,XB(c)
- Vars
- Q(e);N_GUARD,XB(A)::QAR1(D)
- R(a);N_GUARD,XB(A)::QAR1(D)
- B(c);XR(B)::B(A)+R(C),DCHECK
- B(c);::B(A)+R(C),DCHECK
- B(c);N_GUARD::QAB1(D),XB(c)
- B(g);N_GUARD::QAR1(D),XB(g)
- Refutation
- Q(e);
- Try
- R(B);
- Threat
- B(A)+R(C),DCHECK,XB(c)
- Vars
- Q(e);N_GUARD,XB(A)::QAR1(D)
- R(a);N_GUARD,XB(A)::QAR1(D)
- Q(e);N_GUARD::QAR1(D)
- B(c);::B(A)+R(C),DCHECK
- B(c);N_GUARD::QAB1(D),XB(c)
- Refutation
- B(c);XP(F)
- Try
- R(C);CHECK,XB(c)
- Refutation
- S(b);XR(C)
- Try
- Actual
- R(B);
- Threat
- B(A)+R(C),DCHECK,XB(c)
- Vars
- Q(e);N_GUARD,XB(A)::R1(B)
- R(a);N_GUARD,XB(A)::QAB(D)
- B(g);N_GUARD::QAR1(D),XB(g)
- Q(e);N_GUARD::R1(B)
- B(c);::B(A)+R(C),DCHECK
- B(c);SBLOCK::QAR1(D)
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