MESON Chess Problem Database
Problem Display
PID: 246692 (3Bb3/5nqQ/K1NR2r1/p1NpPkp1/r1np2p1/6P1/3p4/7B w - - 0 1)
Petite, Efren
El Ajedrez Espanol, 1957
#2
9 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Qxg6#
- 1...Qf6
- 2.Rxf6#
- 1...Qh6
- 2.Rf6#
- 1...Qf8
- 2.Rf6#
- 2.Qxg6#
- 1...Qh8
- 2.Qxg6#
- 1...Qg8
- 2.Rf6#
- 1...Scxe5
- 2.Se7#
- 1...Sfxe5
- 2.Sxd4#
- 1...Qxe5
- Tries
- 1.Bxd5?
- threat
- 2.Be4#
- 2.Be6#
- 1...Qxe5
- 2.Qxg6#
- 1...Qxh7
- 2.Be4#
- 1...Scxd6
- 2.Be6#
- 1...Sfxd6
- 2.Be6#
- 1...Sxd8
- 2.Be4#
- 1...Qf6
- 2.Be4#
- 2.Rxf6#
- 1...Bd7
- 2.Be4#
- 1...Bxc6!
- threat
- 1.Bf6?
- threat
- 2.Sxd4#
- 2.Se7#
- 1...Qxf6
- 2.Rxf6#
- 1...Scxe5
- 2.Se7#
- 1...Scxd6
- 2.Se7#
- 1...Sfxe5
- 2.Sxd4#
- 1...Sfxd6
- 2.Sxd4#
- 1...d1Q
- 2.Se7#
- 1...d1R
- 2.Se7#
- 1...Qf8
- 2.Sxd4#
- 1...Sb2
- 2.Se7#
- 1...Sa3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Sh6
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...Sh8
- 2.Sxd4#
- 1...d3
- 2.Sd4#
- 2.Se7#
- 1...Bxc6!
- threat
- 1.Re6?
- threat
- 2.Sxd4#
- 2.Se7#
- 1...Qxe5
- 2.Se7#
- 2.Qxg6#
- 1...Scxe5
- 2.Se7#
- 1...Sfxe5
- 2.Sxd4#
- 1...Sxd8
- 2.Sxd4#
- 1...d1Q
- 2.Se7#
- 1...d1R
- 2.Se7#
- 1...Qf6
- 2.Sxd4#
- 2.Rxf6#
- 1...Qf8
- 2.Sxd4#
- 2.Rf6#
- 2.Qxg6#
- 1...Sb2
- 2.Se7#
- 1...Sa3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Scd6
- 2.Se7#
- 1...Sfd6
- 2.Sxd4#
- 1...Sh6
- 2.Sxd4#
- 1...Sh8
- 2.Sxd4#
- 1...d3
- 2.Sd4#
- 2.Se7#
- 1...Bxc6!
- threat
- 1.Rxg6?
- threat
- 2.Rxg5#
- 2.Rf6#
- 2.Rxg7#
- 1...Qxe5
- 2.Rxg5#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rh6#
- 2.Rg7#
- 2.Rg8#
- 1...Qxh7
- 2.Rf6#
- 1...Bxc6
- 2.Rxg5#
- 1...Scxe5
- 2.Se7#
- 2.Rxg5#
- 2.Rf6#
- 1...Sfxe5
- 2.Sxd4#
- 2.Rxg5#
- 2.Rf6#
- 1...Sxd8
- 2.Rf6#
- 1...Qf6
- 2.Rxf6#
- 1...Qh6
- 2.Rxg5#
- 2.Rf6#
- 2.Rxh6#
- 1...Qf8
- 2.Rxg5#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rh6#
- 2.Rg7#
- 2.Rg8#
- 1...Qh8
- 2.Rxg5#
- 2.Rf6#
- 1...Qg8
- 2.Rxg5#
- 2.Rf6#
- 2.Rxg8#
- 1...Sfd6
- 2.Rxg5#
- 2.Rf6#
- 1...Sh6
- 2.Rxg5#
- 2.Rf6#
- 1...Sh8
- 2.Rxg5#
- 2.Rf6#
- 1...Qxg6!
- threat
- 1.Bxd5?
- Keys
- 1.Rxd5!
- threat
- 2.Be4#
- 1...Scd6
- 2.Se7#
- 1...Sfd6
- 2.Sxd4#
- threat
- 1.Rxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(l);N_GUARD,XP(D)::QAB1(H),XR(j)
- Q(l);N_GUARD::R1(G),XQ(l)
- Q(l);N_GUARD::R1(G)
- Q(l);N_GUARD::QAB1(H),XR(j)
- S(c);SBLOCK,XP(D)::S(F)
- S(k);SBLOCK,XP(D)::S(F),XP(d)
- Tries
- Try
- B(A);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(l);N_GUARD,XP(D)::QAB1(H),XR(j)
- Q(l);N_SPINR(j),XQ(H)::B(A)
- S(c);XR(G)::B(A)
- S(k);XR(G)::B(A)
- S(k);XB(I)::B(A)
- B(m);::B(A)
- Refutation
- B(m);XS(F)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- Q(l);OGATE,XB(I)::R1(G),XQ(l)
- S(c);XP(D)::S(F)
- S(c);XR(G)::S(F)
- S(k);XP(D)::S(F),XP(d)
- S(k);XR(G)::S(F),XP(d)
- P(a);::S(F)
- Q(l);::S(F),XP(d)
- S(c);::S(F)
- S(k);::S(F),XP(d)
- Refutation
- B(m);XS(F)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- S(c);XP(D)::S(F)
- S(k);XP(D)::S(F),XP(d)
- S(k);XB(I)::S(F),XP(d)
- P(a);::S(F)
- S(c);::S(F)
- S(k);::S(F),XP(d)
- Refutation
- B(m);XS(F)
- Try
- R(G);XR(j)
- Threat
- DUALS(3)
- Vars
- Q(l);XQ(H)::R1(G)
- B(m);XS(F)::QAB(H)+R(G),DCHECK,XP(i)
- S(k);XB(I)::QAB(H)+R(G),DCHECK
- Q(l);P_PINS(F)::QAB(H)+R(G),DCHECK,XQ(l)
- Refutation
- Q(l);P_PINS(F),P_SPINQ(l),XR(G)
- Try
- Actual
- R(G);P_SPINS(F),XP(g)
- Threat
- B(A)
- Vars
- S(c);N_PINS(F)::S(F)
- S(k);N_PINS(F)::S(F),XP(d)
Developed and maintained by Brian Stephenson.
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CSS/Javascript (jQuery, Bootstrap & DataTables).