MESON Chess Problem Database
Problem Display
PID: 245175 (5n2/Q7/Kp3rn1/5p2/NRBkpB2/3q2N1/5P2/3R1b2 w - - 0 1)
Petite, Efren
Scacchi e Scienze Applicate, 1986
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rc6
- 2.Sxf5#
- 1...Rd6
- 2.Sxf5#
- 1...Re6
- 2.Sxf5#
- 1...Rf7
- 2.Qxb6#
- 1...Be2
- 2.Sxe2#
- 1...Bg2
- 2.Se2#
- 1...Bh3
- 2.Se2#
- 1...Se5
- 2.Be3#
- 1...Se6
- 2.Qd7#
- 1...e3
- 2.fxe3#
- 1...Rc6
- Tries
- 1.Rxd3+?
- 1...exd3
- 2.Ba2#
- 2.Bb3#
- 2.Be6#
- 2.Bf7#
- 2.Bg8#
- 1...Bxd3!
- 1...exd3
- 1.Qb8?
- threat
- 2.Be3#
- 1...b5+
- 2.Be6#
- 1...Rd6
- 2.Sxf5#
- 2.Qxd6#
- 1...e3
- 2.Bxe3#
- 2.fxe3#
- 1...Sxf4!
- threat
- 1.Qb7?
- threat
- 2.Bxd3#
- 2.Bb5#
- 2.Qd5#
- 1...b5+
- 2.Be6#
- 1...Qxd1
- 2.Bxf1#
- 2.Be2#
- 2.Qd5#
- 1...Qd2
- 2.Bxf1#
- 2.Be2#
- 2.Qd5#
- 1...Rc6
- 2.Sxf5#
- 1...Rd6
- 2.Sxf5#
- 2.Bxd3#
- 2.Bb5#
- 1...Se5
- 2.Be3#
- 2.Qd5#
- 1...Se7
- 2.Bxd3#
- 2.Bb5#
- 1...Sxf4!
- threat
- 1.Qc7?
- threat
- 2.Be3#
- 1...b5+
- 2.Be6#
- 1...Rd6
- 2.Sxf5#
- 2.Qxd6#
- 1...e3
- 2.Bxe3#
- 2.fxe3#
- 1...Sxf4!
- threat
- 1.Qd7+?
- 1...Rd6
- 2.Sxf5#
- 2.Qxd6#
- 1...Sxd7!
- 1...Rd6
- 1.Qe7?
- threat
- 2.Be3#
- 1...b5+
- 2.Be6#
- 1...Sxf4
- 2.Qxf6#
- 1...Re6
- 2.Sxf5#
- 1...Se6
- 2.Qd6#
- 2.Qd7#
- 1...e3
- 2.Bxe3#
- 2.Qxe3#
- 2.fxe3#
- 1...Sxe7!
- threat
- 1.Qf7?
- threat
- 2.Bxd3#
- 2.Bb5#
- 2.Qd5#
- 1...b5+
- 2.Be6#
- 1...Qxd1
- 2.Bxf1#
- 2.Be2#
- 2.Qd5#
- 1...Sxf4
- 2.Qxf6#
- 1...Qd2
- 2.Bxf1#
- 2.Be2#
- 2.Qd5#
- 1...Rc6
- 2.Sxf5#
- 2.Qd5#
- 1...Rd6
- 2.Sxf5#
- 2.Bxd3#
- 2.Bb5#
- 1...Re6
- 2.Sxf5#
- 1...Se5
- 2.Be3#
- 2.Qd5#
- 1...Se7
- 2.Bxd3#
- 2.Bb5#
- 2.Qxf6#
- 1...Se6
- 2.Qd7#
- 1...Rxf7!
- threat
- 1.Qa8?
- threat
- 2.Bxd3#
- 2.Bb5#
- 2.Qd5#
- 1...b5+
- 2.Be6#
- 1...Qxd1
- 2.Bxf1#
- 2.Be2#
- 2.Qd5#
- 1...Qd2
- 2.Bxf1#
- 2.Be2#
- 2.Qd5#
- 1...Rc6
- 2.Sxf5#
- 1...Rd6
- 2.Sxf5#
- 2.Bxd3#
- 2.Bb5#
- 1...Se5
- 2.Be3#
- 2.Qd5#
- 1...Se7
- 2.Bxd3#
- 2.Bb5#
- 1...Sxf4!
- threat
- 1.Rxd3+?
- Keys
- 1.Qg7!
- threat
- 2.Sxf5#
- 1...b5+
- 2.Be6#
- 1...Sxf4
- 2.Qxf6#
- 1...Bh3
- 2.Se2#
- 1...Sh4
- 2.Qxf6#
- 1...Se5
- 2.Be3#
- 1...Se7
- 2.Qxf6#
- 1...e3
- 2.fxe3#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- R(g);N_GUARD::S(C),XP(e)
- R(g);N_GUARD::QAB(I),XP(f)
- B(a);N_GUARD::S(C),XB(a)
- B(a);N_GUARD::S(C)
- S(h);SBLOCK::B(G)
- S(i);N_GUARD,S_CUTR(g)::QAR(I)
- P(d);::P(B),XP(d)
- Tries
- Try
- R(A);CHECK,N_SPINB(F),XQ(b)
- Refutation
- B(a);P_PINB(F),XR(A)
- Try
- Q(I);N_PINP(f)
- Threat
- B(G)
- Vars
- P(f);CHECK,N_PINB(F)::R(E)+B(F)
- Refutation
- S(h);XB(G)
- Try
- Q(I);N_PINP(f)
- Threat
- DUALS(3)
- Vars
- P(f);CHECK,N_PINB(F)::R(E)+B(F)
- R(g);N_GUARD::S(C),XP(e)
- Refutation
- S(h);XB(G)
- Try
- Q(I);N_PINP(f)
- Threat
- B(G)
- Vars
- P(f);CHECK,N_PINB(F)::R(E)+B(F)
- Refutation
- S(h);XB(G)
- Try
- Q(I);CHECK,N_PINP(f)
- Refutation
- S(i);XQ(I)
- Try
- Q(I);N_PINP(f)
- Threat
- B(G)
- Vars
- P(f);CHECK,N_PINB(F)::R(E)+B(F)
- S(h);N_GUARD,XB(G)::QAB(I),XR(g)
- R(g);N_GUARD::S(C),XP(e)
- Refutation
- S(h);XQ(I)
- Try
- Q(I);N_PINP(f)
- Threat
- DUALS(3)
- Vars
- P(f);CHECK,N_PINB(F)::R(E)+B(F)
- S(h);N_GUARD,XB(G)::QAB(I),XR(g)
- R(g);N_GUARD::S(C),XP(e)
- S(i);N_GUARD,S_CUTR(g)::QAR(I)
- Refutation
- R(g);XQ(I)
- Try
- Q(I);N_PINP(f)
- Threat
- DUALS(3)
- Vars
- P(f);CHECK,N_PINB(F)::R(E)+B(F)
- R(g);N_GUARD::S(C),XP(e)
- Refutation
- S(h);XB(G)
- Try
- Actual
- Q(I);N_PINP(f),P_PINR(g)
- Threat
- S(C),XP(e)
- Vars
- P(f);CHECK,N_PINB(F)::R(E)+B(F)
- S(h);N_GUARD,XB(G)::QAB(I),XR(g)
- B(a);N_GUARD::S(C)
- S(h);N_GUARD::QAB(I),XR(g)
- S(h);N_SPINR(g),SBLOCK::B(G)
- P(d);::P(B),XP(d)
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