MESON Chess Problem Database
Problem Display
PID: 156618 (8/4p3/1KP1n1R1/2p1k3/2PbP2p/B1P2P1N/3R3P/1Q6 w - - 0 1)
Pirrone, Santi
1/2 Prize, Correspondence Chess, 1960
#2
12 + 6
| 4901 | Best Problems | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Rd5#
- 1...Bf2
- 2.Rd5#
- 1...Bxc3
- 2.Rd5#
- 1...Be3
- 2.Rd5#
- 1...Sg5
- 2.f4#
- 1...Sc7
- 2.f4#
- 1...Sg7
- 2.f4#
- 1...Sd8
- 2.f4#
- 1...Sf8
- 2.f4#
- 1...Bg1
- Tries
- 1.Ka7?
- 1...Bxc3
- 2.Rd5#
- 1...Bg1
- 2.Rd5#
- 1...Bf2
- 2.Rd5#
- 1...Be3
- 2.Rd5#
- 1...Sf4
- 2.Qb8#
- 1...Sg5
- 2.Qb8#
- 2.f4#
- 1...Sc7
- 2.f4#
- 1...Sg7
- 2.Qb8#
- 2.f4#
- 1...Sd8
- 2.Qb8#
- 2.f4#
- 1...Sf8
- 2.Qb8#
- 2.f4#
- 1...Kd6!
- 1...Bxc3
- 1.Bxc5?
- 1...Bxc3
- 2.Rd5#
- 1...Sxc5
- 2.cxd4#
- 2.f4#
- 1...Sf4
- 2.Bxd4#
- 2.cxd4#
- 1...Bg1
- 2.Rd5#
- 1...Bf2
- 2.Rd5#
- 1...Be3
- 2.Rd5#
- 1...Sg5
- 2.Bxd4#
- 2.cxd4#
- 2.f4#
- 1...Sc7
- 2.Bxd4#
- 2.cxd4#
- 2.f4#
- 1...Sg7
- 2.Bxd4#
- 2.cxd4#
- 2.f4#
- 1...Sd8
- 2.Bxd4#
- 2.cxd4#
- 2.f4#
- 1...Sf8
- 2.Bxd4#
- 2.cxd4#
- 2.f4#
- 1...Bxc5+!
- 1...Bxc3
- 1.Qd3?
- 1...Kd6
- 2.Qxd4#
- 1...Bxc3
- 2.Qd5#
- 1...Bg1
- 2.Qd5#
- 1...Bf2
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sg5
- 2.f4#
- 1...Sc7
- 2.f4#
- 1...Sg7
- 2.f4#
- 1...Sd8
- 2.f4#
- 1...Sf8
- 2.f4#
- 1...Sf4!
- 1...Kd6
- 1.Qe1?
- 1...Kd6
- 2.e5#
- 1...Bxc3
- 2.Rd5#
- 1...Bg1
- 2.Rd5#
- 1...Bf2
- 2.Rd5#
- 1...Be3
- 2.Rd5#
- 1...Sg5
- 2.f4#
- 1...Sc7
- 2.f4#
- 1...Sg7
- 2.f4#
- 1...Sd8
- 2.f4#
- 1...Sf8
- 2.f4#
- 1...Sf4!
- 1...Kd6
- 1.Qg1?
- 1...Kd6
- 2.Qxd4#
- 1...Bxg1
- 2.Rd5#
- 1...Bxc3
- 2.Rd5#
- 1...Sf4
- 2.Qg5#
- 1...Bf2
- 2.Rd5#
- 1...Be3
- 2.Rd5#
- 1...Sg5
- 2.Qxg5#
- 1...Sc7
- 2.Qg5#
- 1...Sd8
- 2.Qg5#
- 1...Sf8
- 2.Qg5#
- 1...Sg7!
- 1...Kd6
- 1.cxd4+?
- 1...Kd6
- 2.Bxc5#
- 2.e5#
- 1...Sxd4
- 2.f4#
- 1...cxd4!
- 1...Kd6
- 1.f4+?
- 1...Kd6
- 2.Bxc5#
- 2.Rxd4#
- 2.e5#
- 1...Sxf4!
- 1...Kd6
- 1.Ka7?
- Keys
- 1.Qb5!
- 1...Kd6
- 2.Qxc5#
- 1...Bxc3
- 2.Rd5#
- 1...Sf4
- 2.cxd4#
- 1...Bg1
- 2.Rd5#
- 1...Bf2
- 2.Rd5#
- 1...Be3
- 2.Rd5#
- 1...Sg5
- 2.cxd4#
- 1...Sc7
- 2.cxd4#
- 1...Sg7
- 2.cxd4#
- 1...Sd8
- 2.cxd4#
- 1...Sf8
- 2.cxd4#
- 1...Kd6
- 1.Qb5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(a);OGATE::R1(B)
- B(a);OGATE,XP(E)::R1(B)
- S(e);N_GUARD::P(F)
- Tries
- Try
- K(J);S_FLIGHT
- Vars
- B(a);OGATE,XP(E)::R1(B)
- B(a);OGATE::R1(B)
- S(e);N_GUARD::QAB(A)
- S(e);N_GUARD::P(F)
- Refutation
- K(d);P_SPINB(a),P_SPINP(c),P_SPINS(e),S_FLIGHT
- Try
- B(D);P_SPINB(D),XP(c)
- Vars
- B(a);N_PINB(D),XP(E)::R1(B)
- B(a);::R1(B)
- Refutation
- B(a);CHECK,XB(D)
- Try
- Q(A);
- Vars
- K(d);P_SPINB(a),P_SPINP(c),P_SPINS(e),S_FLIGHT::QAR2(A),XB(a)
- B(a);OGATE,XP(E)::QAR1(A)
- B(a);OGATE::QAR1(A)
- S(e);N_GUARD::P(F)
- Refutation
- S(e);
- Try
- Q(A);
- Vars
- K(d);OGATE,P_SPINB(a),P_SPINP(c),P_SPINS(e),S_FLIGHT::P(I)
- B(a);OGATE,XP(E)::R1(B)
- B(a);OGATE::R1(B)
- S(e);N_GUARD::P(F)
- Refutation
- S(e);
- Try
- Q(A);
- Vars
- K(d);P_SPINB(a),P_SPINP(c),P_SPINS(e),S_FLIGHT::QAR2(A),XB(a)
- B(a);OGATE,XQ(A)::R1(B)
- B(a);OGATE,XP(E)::R1(B)
- S(e);N_GUARD::QAR2(A)
- B(a);OGATE::R1(B)
- S(e);N_GUARD::QAR2(A),XS(e)
- Refutation
- S(e);
- Try
- P(E);CHECK,XB(a)
- Vars
- S(e);XP(E)::P(F)
- Refutation
- P(c);XP(E)
- Try
- P(F);CHECK
- Refutation
- S(e);XP(F)
- Try
- Actual
- Q(A);P_PINP(c)
- Vars
- K(d);P_SPINB(a),P_SPINS(e),S_FLIGHT::QAB1(A),XP(c)
- B(a);OGATE,XP(E)::R1(B)
- S(e);N_GUARD::P(E),XB(a)
- B(a);OGATE::R1(B)
Developed and maintained by Brian Stephenson.
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