MESON Chess Problem Database
Problem Display
PID: 114216 (1b6/qp6/1n6/n3p3/r1k1N3/1R1R1K2/2rpB3/Q7 w - - 0 1)
Stocchi, Ottavio
American Chess Bulletin, 1956
#2
6 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rca2
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 1...Sxb3
- 2.Rd4#
- 1...Sd5
- 2.Re3#
- 1...Sd7
- 2.Qxa4#
- 1...Sa8
- 2.Qxa4#
- 1...Sc8
- 2.Qxa4#
- 1...Rca2
- Tries
- 1.Sxd2+?
- 1...Rxd2
- 2.Qc3#
- 1...Kc5!
- 1...Rxd2
- 1.Qb2?
- threat
- 2.Rxd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxc2#
- 1...Sxb3
- 2.Rd4#
- 2.Qxb3#
- 1...Rb4
- 2.Rxb4#
- 2.Rxd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...d1Q
- 2.Rd4#
- 1...d1S
- 2.Rd2#
- 2.Rd4#
- 1...d1B
- 2.Rd4#
- 1...d1R
- 2.Rd2#
- 2.Rd4#
- 2.Qxc2#
- 1...Rc1
- 2.Rxd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Rc3
- 2.Rbxc3#
- 2.Qxc3#
- 1...Ra2
- 2.Rb4#
- 2.Rxd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Bd6
- 2.Rxd2#
- 2.Rd4#
- 2.Rxd6#
- 2.Qxc2#
- 1...Sd5
- 2.Rxd2#
- 2.Re3#
- 2.Rd4#
- 1...Sd7
- 2.Rxd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rxd7#
- 2.Qxc2#
- 1...Rxb2!
- threat
- 1.Qxe5?
- threat
- 2.Rdc3#
- 2.Re3#
- 2.Qd4#
- 2.Qb5#
- 2.Qc5#
- 1...Sxb3
- 2.Rd4#
- 1...Rc3
- 2.Sxd2#
- 2.Rdxc3#
- 2.Qxc3#
- 2.Qb5#
- 1...d1Q
- 2.Rdc3#
- 2.Qd4#
- 2.Qb5#
- 2.Qc5#
- 1...d1S
- 2.Rdc3#
- 2.Qd4#
- 2.Qb5#
- 2.Qc5#
- 1...d1B
- 2.Rdc3#
- 2.Qd4#
- 2.Qb5#
- 2.Qc5#
- 1...d1R
- 2.Rdc3#
- 2.Qd4#
- 2.Qb5#
- 2.Qc5#
- 1...Qa6
- 2.Rdc3#
- 2.Re3#
- 2.Qd4#
- 2.Qc5#
- 1...Rb4
- 2.Rdc3#
- 2.Re3#
- 2.Qc5#
- 1...Bd6
- 2.Sxd6#
- 2.Rdc3#
- 2.Re3#
- 2.Qd4#
- 2.Qb5#
- 1...Sc6
- 2.Rdc3#
- 2.Re3#
- 2.Qb5#
- 2.Qc5#
- 1...Sd5
- 2.Rdc3#
- 2.Re3#
- 2.Qxd5#
- 1...Sd7
- 2.Rdc3#
- 2.Re3#
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 1...Sa8
- 2.Rdc3#
- 2.Re3#
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 1...Sc8
- 2.Rdc3#
- 2.Re3#
- 2.Qb5#
- 2.Qd5#
- 2.Qe6#
- 1...Bxe5!
- threat
- 1.Qa3?
- threat
- 2.Rxd2#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qc5#
- 1...Sxb3
- 2.Rxd2#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxb3#
- 1...Rb4
- 2.Rxb4#
- 2.Rxd2#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxb4#
- 1...d1Q
- 2.Qc5#
- 1...d1S
- 2.Rd2#
- 2.Qc5#
- 1...d1B
- 2.Qc5#
- 1...d1R
- 2.Rd2#
- 2.Qc5#
- 1...Rc3
- 2.Sxd2#
- 1...Bd6
- 2.Sxd6#
- 2.Rxd2#
- 2.Rxd6#
- 1...Sd5
- 2.Rxd2#
- 1...Sd7
- 2.Rxd2#
- 2.Rd6#
- 2.Rxd7#
- 2.Qxa4#
- 1...Sa8
- 2.Rxd2#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxa4#
- 1...Sc8
- 2.Rxd2#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxa4#
- 1...Rxa3!
- threat
- 1.Sxd2+?
- Keys
- 1.Qg1!
- threat
- 2.Qc5#
- 1...Sxb3
- 2.Rd4#
- 1...Rc3
- 2.Sxd2#
- 1...Bd6
- 2.Sxd6#
- 1...Sd5
- 2.Rdc3#
- 1...Sd7
- 2.Qg8#
- 1...Sa8
- 2.Qg8#
- 1...Sc8
- 2.Qg8#
- threat
- 1.Qg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD::QAR1(A)
- R(a);N_GUARD,P_PINR(D)::QAR1(A),XR(a)
- S(e);SBLOCK,XR(C)::B(B)+R(D),DCHECK
- S(g);SBLOCK::B(B)+R(D)
- S(g);N_GUARD::QAR2(A),XR(c)
- Tries
- Try
- S(F);CHECK,XP(b)
- Vars
- R(a);XS(F)::QAR1(A)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(A);
- Threat
- DUALS(6)
- Vars
- P(b);P_PINB(B)::B(B)+R(D),DCHECK
- Refutation
- R(a);XQ(A)
- Try
- Q(A);XP(f)
- Threat
- DUALS(5)
- Vars
- S(e);SBLOCK,XR(C)::B(B)+R(D),DCHECK
- Refutation
- B(j);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(5)
- Vars
- P(b);P_PINB(B)::QAR1(A)
- R(a);N_GUARD,P_PINR(D)::S(F),XP(b)
- S(g);::B(B)+R(D),XP(b)
- Refutation
- R(c);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAR1(A)
- Vars
- S(e);SBLOCK,XR(C)::B(B)+R(D),DCHECK
- R(a);N_GUARD,P_PINR(D)::S(F),XP(b)
- B(j);N_GUARD::S(F),XB(j)
- S(g);SBLOCK::B(B)+R(D),DCHECK
- S(g);N_GUARD::QAB(A)
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