MESON Chess Problem Database
Problem Display
PID: 239997 (8/4B3/2rp1R2/R2Pk1P1/1N1nN3/2n2rP1/5P2/QB5K w - - 0 1)
Petite, Efren
Sinfonie Scacchistiche, 1980
#2
12 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.f4#
- 1...Rxg3
- 2.f4#
- 1...Rf4
- 2.gxf4#
- 1...Rc4
- 2.Bxd6#
- 1...Rc5
- 2.Bxd6#
- 1...Rc7
- 2.Bxd6#
- 1...Rc8
- 2.Bxd6#
- 1...Sd1
- 2.Sxc6#
- 1...Sa2
- 2.Sxc6#
- 1...Sce2
- 2.Sxc6#
- 1...Sa4
- 2.Sxc6#
- 1...Sxe4
- 2.Sxc6#
- 1...Sxd5
- 2.Sxc6#
- 2.Rxd5#
- 1...Sde2
- 2.Sxc6#
- 1...Sb3
- 2.Sxc6#
- 1...Sf5
- 2.Sxc6#
- 1...Se6
- 2.Sxc6#
- 1...Re3
- Tries
- 1.Sxd6?
- threat
- 2.Sf7#
- 1...Rxf6
- 2.Sd3#
- 1...Rxd6
- 2.Bxd6#
- 1...Sxb1
- 2.Sxc6#
- 2.Re6#
- 2.dxc6#
- 1...Sc2
- 2.Sxc6#
- 1...Sde2
- 2.Sxc6#
- 1...Sb3
- 2.Sxc6#
- 1...Sf5
- 2.Sxc6#
- 1...Se6
- 2.Sxc6#
- 1...Rd3
- 2.Sxd3#
- 2.f4#
- 1...Sdb5!
- threat
- 1.dxc6+?
- 1...Scb5
- 2.Bxd6#
- 1...Sd5
- 2.Bxd6#
- 2.Rxd5#
- 1...d5
- 2.Bd6#
- 1...Sdb5!
- 1...Scb5
- 1.Sxd6?
- Keys
- 1.Sd2!
- 1...Rxf2
- 2.Sd3#
- 1...Rxg3
- 2.f4#
- 1...Rxf6
- 2.Bxf6#
- 1...Sxb1
- 2.Sxc6#
- 1...Sxd5
- 2.Sxf3#
- 2.Sxc6#
- 2.Rxd5#
- 1...Sc2
- 2.Sxc6#
- 1...Sde2
- 2.Sxf3#
- 2.Sxc6#
- 1...Sb3
- 2.Sxf3#
- 2.Sxc6#
- 1...Sdb5
- 2.Sxf3#
- 1...Sf5
- 2.Sxf3#
- 2.Sxc6#
- 1...Se6
- 2.Sxf3#
- 2.Sxc6#
- 1...Rd3
- 2.Sxd3#
- 2.f4#
- 1...Re3
- 2.f4#
- 1...Rf4
- 2.Sd3#
- 2.gxf4#
- 1...Rf5
- 2.Sd3#
- 1...Rc4
- 2.Sxc4#
- 2.Bxd6#
- 1...Rc5
- 2.Bxd6#
- 1...Ra6
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rc7
- 2.Bxd6#
- 1...Rc8
- 2.Bxd6#
- 1...Sd1
- 2.Sxf3#
- 2.Sxc6#
- 2.Re6#
- 1...Sa2
- 2.Sxf3#
- 2.Sxc6#
- 2.Re6#
- 1...Sce2
- 2.Sxf3#
- 2.Sxc6#
- 2.Re6#
- 1...Sa4
- 2.Sxf3#
- 2.Sxc6#
- 2.Re6#
- 1...Se4
- 2.Sxf3#
- 2.Sxc6#
- 1...Scb5
- 2.Sxf3#
- 2.Re6#
- 1...Rxf2
- 1.Sd2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 11
- Sets
- R(b);OGATE::P(D)
- R(b);OGATE,XP(E)::P(D)
- R(b);OGATE::P(E),XR(b)
- R(e);N_GUARD::B(L),XP(f)
- S(a);P_SPINS(c)::S(F),XR(e)
- S(a);P_SPINS(c),XS(G)::S(F),XR(e)
- S(c);N_GUARD,P_SPINS(a)::S(F),XR(e)
- Tries
- Try
- S(G);XP(f)
- Threat
- S(G)
- Vars
- R(b);N_GUARD,XR(K)::S(F)
- R(e);OGATE,XS(G)::B(L),XR(e)
- S(c);N_GUARD,P_SPINS(a)::S(F),XR(e)
- Refutation
- S(c);P_SPINS(a)
- Try
- P(I);CHECK,XR(e)
- Vars
- S(a);P_SPINS(c)::B(L),XP(f)
- P(f);P_SPINP(f)::B(L)
- Refutation
- S(c);P_SPINS(a)
- Try
- Actual
- S(G);
- Vars
- R(b);N_GUARD,XP(D)::S(F)
- R(b);OGATE,XP(E)::P(D)
- R(b);OGATE,XR(K)::B(L),XR(b)
- S(a);P_SPINS(c),XB(B)::S(F),XR(e)
- S(c);N_GUARD,P_SPINS(a)::S(F),XR(e)
- S(c);N_GUARD,P_SPINS(a)::S(G),XR(b)
- R(b);OGATE::P(D)
- R(b);N_GUARD::S(F)
- R(e);N_GUARD::B(L),XP(f)
- R(e);N_GUARD::S(G)
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