MESON Chess Problem Database
Problem Display
PID: 23835 (8/7Q/3bpB1p/1p1R1p2/p2NkNpK/1q2P3/3PB3/8 w - - 0 1)
Petite, Efren
2nd Comm., L'Italia Scacchistica, 1997
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Bd3#
- 1...Qa2
- 2.Bd3#
- 1...Qxd5
- 2.Bd3#
- 1...Qb2
- 2.Bd3#
- 1...Qd3
- 2.Bxd3#
- 1...Qb4
- 2.Bd3#
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Re5#
- 1...Bc5
- 2.Re5#
- 1...Be5
- 2.Rxe5#
- 1...Be7
- 2.Re5#
- 1...Bf8
- 2.Re5#
- 1...g3
- 2.Bf3#
- 1...exd5
- 2.Qxf5#
- 1...e5
- 2.Qxf5#
- 1...Qd1
- Tries
- 1.Sxf5?
- threat
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Rd4#
- 1...Qxd5
- 2.Sg3#
- 2.Sxd6#
- 1...Bxf4
- 2.Se7#
- 2.Rd4#
- 1...exd5
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 1...exf5
- 2.Rd4#
- 2.Qxf5#
- 1...Qc4
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 1...Qb2
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.d3#
- 1...Qc3
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 1...Qd3
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 1...Qb4
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.d3#
- 1...Ba3
- 2.Sg3#
- 2.Sd4#
- 2.Sd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Rd4#
- 2.Re5#
- 1...Bb4
- 2.Sg3#
- 2.Sd4#
- 2.Sd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Rd4#
- 2.Re5#
- 1...Bc5
- 2.Sg3#
- 2.Sd4#
- 2.Sd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Re5#
- 1...Be5
- 2.Sg3#
- 2.Sd4#
- 2.Sd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Rxe5#
- 1...Bc7
- 2.Sg3#
- 2.Sd4#
- 2.Sd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Rd4#
- 1...Be7
- 2.Sg3#
- 2.Sd4#
- 2.Sd6#
- 2.Sxh6#
- 2.Sxe7#
- 2.Sg7#
- 2.Rd4#
- 2.Re5#
- 1...Bb8
- 2.Sg3#
- 2.Sd4#
- 2.Sd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Rd4#
- 1...Bf8
- 2.Sg3#
- 2.Sd4#
- 2.Sd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Rd4#
- 2.Re5#
- 1...g3
- 2.Sxg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 2.Rd4#
- 1...e5
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Se7#
- 2.Sg7#
- 1...h5
- 2.Sg3#
- 2.Sd4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 2.Rd4#
- 1...Qxe3!
- threat
- 1.Sdxe6?
- threat
- 2.Rd4#
- 2.Qxf5#
- 1...Qxe3
- 2.Qxf5#
- 1...Qc4
- 2.Qxf5#
- 1...Qb2
- 2.Qxf5#
- 1...Qc3
- 2.Qxf5#
- 1...Qd3
- 2.Qxf5#
- 1...Qb4
- 2.Qxf5#
- 1...Bc5
- 2.Sxc5#
- 2.Re5#
- 2.Qxf5#
- 1...Be5
- 2.Sc5#
- 2.Rxe5#
- 1...Qxd5!
- threat
- 1.Qb7?
- threat
- 2.Re5#
- 1...Qxd5
- 2.Bd3#
- 1...Qxe3
- 2.Rxf5#
- 1...Be5
- 2.Rxe5#
- 1...e5
- 2.Rxe5#
- 1...exd5!
- threat
- 1.Sxf5?
- Keys
- 1.Rxf5!
- threat
- 2.Rxb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 1...Qxe3
- 2.Qb7#
- 1...Bxf4
- 2.Rxb5#
- 2.Rc5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 1...exf5
- 2.Qxf5#
- 1...Qd5
- 2.Bd3#
- 2.Rxd5#
- 2.Re5#
- 1...Bc5
- 2.Rxc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 1...Be5
- 2.Rxe5#
- 2.Rg5#
- 2.Rh5#
- 1...b4
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 1...e5
- 2.Rxe5#
- 2.Rg5#
- 2.Rh5#
- 1...h5
- 2.Rxb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rxh5#
- threat
- 1.Rxf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 15
- Sets
- Q(a);N_GUARD::B(B)
- Q(a);N_GUARD,XR(G)::B(B)
- Q(a);N_GUARD::B(B),XQ(a)
- B(g);N_GUARD::R1(G)
- B(g);N_GUARD::R1(G),XB(g)
- B(g);N_GUARD,P_PINB(H)::R1(G)
- P(d);N_GUARD::B(B)
- P(h);N_GUARD,XR(G)::QAB1(I),XP(f)
- P(h);N_GUARD::QAB1(I),XP(f)
- Tries
- Try
- S(D);XP(f)
- Threat
- DUALS(7)
- Refutation
- Q(a);XP(C)
- Try
- S(D);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(a);XP(C)::QAB1(I),XP(f)
- Q(a);::QAB1(I),XP(f)
- Refutation
- Q(a);XR(G)
- Try
- Q(I);N_PINP(f)
- Threat
- QAB(I)+R(G),DCHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a),XR(G)::B(B)
- Q(a);N_GUARD,XP(C)::QAB(I)+R(G),XP(f)
- B(g);::QAB(I)+R(G),DCHECK,XB(g)
- P(h);::QAB(I)+R(G),DCHECK,XP(h)
- Refutation
- P(h);P_SPINP(h),XR(G)
- Try
- Actual
- R(G);XP(f)
- Threat
- DUALS(6)
- Vars
- Q(a);N_GUARD,XP(C)::QAB(I)
- P(h);OGATE,P_SPINP(h),XR(G)::QAB1(I),XP(h)
Developed and maintained by Brian Stephenson.
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