MESON Chess Problem Database

Problem Display
PID: 264895 (2RQ4/pNPr2q1/Bk1NpPpp/1P6/6P1/2pK2pb/5rP1/6B1 w - - 0 1)

Parcerisa, Jose Antonio Lopez

Coello-75 JT (Problemas), 2017

2RQ4/pNPr2q1/Bk1NpPpp/1P6/6P1/2pK2pb/5rP1/6B1

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6+
      • 2.Qxd6#
    • 1...Rxc7
      • 2.Sc4#
    • 1...Re7
      • 2.Sc4#
    • 1...Rf7
      • 2.Sc4#
  • Tries
    • 1.Kxc3?
      • threat
        • 2.Sc4#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Qxf6+!
    • 1.Ke4?
      • threat
        • 2.Sc4#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Bxg2+!
    • 1.Ra8?
      • threat
        • 2.c8S#
      • 1...Rxd6+
        • 2.Qxd6#
      • 1...Rxc7
        • 2.Sc4#
        • 2.Sc8#
      • 1...Rxd8!
    • 1.Rb8?
      • threat
        • 2.c8S#
      • 1...Rxd6+
        • 2.Qxd6#
      • 1...Rxc7
        • 2.Sc4#
        • 2.Sc8#
      • 1...Rxd8!
    • 1.Qxd7?
      • threat
        • 2.Sc4#
        • 2.Qc6#
      • 1...Bxg2
        • 2.Sc4#
      • 1...Qxd7!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Sc4#
      • 1...Re2+
        • 2.Kxe2#
      • 1...Rf3+
        • 2.Kxf3#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Rf4
        • 2.Kxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(j);CHECK,OGATE,XS(G)::QAR2(L),XR(j)
    • R(j);N_PINS(G),XP(J)::S(G)
    • R(j);N_PINS(G)::S(G)
  • Tries
    • Try
      • K(C);N_SPINS(G),P-FLIGHT,P_SPINP(H),XP(b)
      • Threat
        • S(G)
      • Vars
        • R(j);OGATE,XS(G)::QAR2(L),XR(j)
      • Refutation
        • Q(k);CHECK,XP(H)
    • Try
      • K(C);N_SPINS(G),S_FLIGHT
      • Threat
        • S(G)
      • Vars
        • R(j);OGATE,XS(G)::QAR2(L),XR(j)
      • Refutation
        • B(d);CHECK,XP(B)
    • Try
      • R(K);
      • Threat
        • P=S
      • Vars
        • R(j);CHECK,OGATE,XS(G)::QAR2(L),XR(j)
      • Refutation
        • R(j);XQ(L)
    • Try
      • R(K);
      • Threat
        • P=S
      • Vars
        • R(j);CHECK,OGATE,XS(G)::QAR2(L),XR(j)
      • Refutation
        • R(j);XQ(L)
    • Try
      • Q(L);N_SPINS(G),XR(j)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XP(B)::S(G)
      • Refutation
        • Q(k);P_PINS(G),XQ(L)
  • Actual
    • K(C);N_PINR(a),N_SPINS(G),P-FLIGHT
    • Threat
      • S(G)
    • Vars
      • R(a);CHECK::B(A)+K(C),XR(a)
      • R(j);OGATE,XS(G)::QAR2(L),XR(j)
      • R(a);::B(A)+K(C),XR(a)
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