MESON Chess Problem Database
Problem Display
PID: 168455 (8/2K3pr/6Q1/3p2p1/nPR1pP2/N2k1n2/4qBBr/1N2R3 w - - 0 1)
Petite, Efren
1st HM., Problemas, 1982
#2
10 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Re3#
- 1...Qf1
- 2.Bxf1#
- 2.Re3#
- 1...Qa2
- 2.Re3#
- 1...Qb2
- 2.Re3#
- 1...Qc2
- 2.Re3#
- 1...Qe3
- 2.Rxe3#
- 1...Sxe1
- 2.Rd4#
- 1...Sg1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sh4
- 2.Rd4#
- 1...Se5
- 2.Rd4#
- 1...Sb2
- 2.Rc3#
- 1...Sc3
- 2.Rxc3#
- 1...Sc5
- 2.Rc3#
- 1...Sb6
- 2.Rc3#
- 1...Qd1
- Tries
- 1.Bf1?
- threat
- 2.Bxe2#
- 1...Qxf1
- 2.Re3#
- 1...Sxe1
- 2.Rd4#
- 1...Sg1
- 2.Rd1#
- 2.Rd4#
- 1...Sd4
- 2.Rd1#
- 2.Rxd4#
- 1...Sc3
- 2.Rxc3#
- 1...Rxf2!
- threat
- 1.Rd1+?
- 1...Qd2
- 2.Bf1#
- 1...Sd2
- 2.Rd4#
- 1...Qxd1!
- 1...Qd2
- 1.Qa6?
- threat
- 2.Rcc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rd4#
- 2.Rc5#
- 2.Rc6#
- 1...Qxf2
- 2.Rcxe4#
- 1...dxc4
- 2.Qxc4#
- 1...Qa2
- 2.Re3#
- 2.Rc3#
- 2.Rd4#
- 1...Qc2
- 2.Re3#
- 2.Rxc2#
- 2.Rc3#
- 1...Qe3
- 2.Rxe3#
- 1...R2h6
- 2.Rc3#
- 2.Rd4#
- 2.Rc6#
- 1...R7h6
- 2.Rc3#
- 2.Rd4#
- 2.Rc6#
- 1...Sd2
- 2.Rc3#
- 2.Rd4#
- 1...Sd4
- 2.Rc3#
- 2.Rxd4#
- 1...Se5
- 2.Rc3#
- 2.Rd4#
- 1...Sb2
- 2.Rc3#
- 2.Rd4#
- 1...Sc3
- 2.Rxc3#
- 2.Rd4#
- 1...Sc5
- 2.Rc3#
- 2.Rd4#
- 2.Rxc5#
- 1...Sb6
- 2.Rc3#
- 2.Rd4#
- 1...e3
- 2.Qg6#
- 1...d4
- 2.Rcc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rxd4#
- 2.Rc5#
- 2.Rc6#
- 1...g6+!
- threat
- 1.Bf1?
- Keys
- 1.Rxe4!
- threat
- 2.R4xe2#
- 2.Rd4#
- 1...Qc2+
- 2.Rc4#
- 1...Qxe1
- 2.Rxe1#
- 1...Qxf2
- 2.Rc4#
- 2.Qa6#
- 1...Qxe4
- 2.Bf1#
- 1...Sxe1
- 2.Rd4#
- 2.Qa6#
- 1...dxe4
- 2.Qa6#
- 1...Qd1
- 2.R1e3#
- 2.R4e2#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 2.Qa6#
- 1...Qf1
- 2.Bxf1#
- 2.R1e3#
- 2.R4e2#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 2.Qa6#
- 1...Qa2
- 2.R1e3#
- 2.R4e2#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qb2
- 2.R1e3#
- 2.R4e2#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 2.Qa6#
- 1...Qd2
- 2.R4e2#
- 2.Rc4#
- 2.Rd4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 2.Qa6#
- 1...Qe3
- 2.R1xe3#
- 1...R2h6
- 2.Rd4#
- 1...R7h6
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Re3#
- 2.Rxd4#
- 1...Sh4
- 2.Rd4#
- 2.Qa6#
- 1...Se5
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...d4
- 2.R4xe2#
- 2.Re3#
- 2.Rxd4#
- threat
- 1.Rxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 5
- REMOVED MATES = 9
- Sets
- Q(a);OGATE::R1(B)
- Q(a);OGATE,P_PINR(G)::R1(B)
- Q(a);OGATE::R1(B),XQ(a)
- S(d);N_GUARD,XR(B)::R1(G)
- S(d);N_GUARD::R1(G)
- S(d);N_GUARD::R1(G),XS(d)
- S(e);N_GUARD::R1(G)
- S(e);N_GUARD::R1(G),XS(e)
- Tries
- Try
- B(D);P_PINQ(a)
- Threat
- B(D),XQ(a)
- Vars
- Q(a);N_SPINQ(a),OGATE,XB(D)::R1(B)
- S(d);N_GUARD,XR(B)::R1(G)
- S(e);N_GUARD::R1(G),XS(e)
- Refutation
- R(b);XB(C)
- Try
- R(B);CHECK
- Vars
- Q(a);P_SPINQ(a),S_CUTS(d)::B(D)
- S(d);P_SPINS(d)::R1(G)
- Refutation
- Q(a);XR(B)
- Try
- Q(I);N_PINP(f)
- Threat
- DUALS(6)
- Vars
- Q(a);XB(C)::QAB(I)+R(G),XP(f)
- P(g);OGATE,P_SPINP(g),XR(G)::QAB1(I),XP(g)
- Q(a);OGATE::R1(B),XQ(a)
- P(f);OGATEB::QAB(I)
- Refutation
- P(i);CHECK
- Try
- Actual
- R(G);XP(f)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::QAB(I)+R(G)
- Q(a);OGATE,XR(B)::QAB(I)+R(G),XQ(a)
- Q(a);OGATEB,P_SPINQ(a),XR(G)::B(D)
- P(g);P_SPINP(g),SBLOCK,XR(G)::QAB(I)
- Q(a);OGATE::R1(B),XQ(a)
- R(b);::QAB(I)+R(G),DCHECK
- R(j);::QAB(I)+R(G),DCHECK
- S(d);::QAB(I)+R(G),DCHECK
- S(e);::QAB(I)+R(G),DCHECK
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