MESON Chess Problem Database

Problem Display
PID: 55415 (3K2b1/2PR1NNp/Qpr2k1P/2p5/1P4R1/p3pr2/8/8 w - - 0 1)

Grinblat, Arieh

Variantim, 2004

3K2b1/2PR1NNp/Qpr2k1P/2p5/1P4R1/p3pr2/8/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qxf1#
    • 1...b5
      • 2.Qxc6#
  • Tries
    • 1.Rf4+?
      • 1...Kg6
        • 2.Qd3#
      • 1...Rxf4!
    • 1.Qc4?
      • threat
        • 2.Qc3#
      • 1...cxb4
        • 2.Qd4#
        • 2.Qxc6#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Rf5
        • 2.Se8#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Re6
        • 2.Qxe6#
      • 1...e2!
    • 1.Qb7?
      • threat
        • 2.Qxc6#
      • 1...Rxc7
        • 2.Qxf3#
      • 1...Rd6
        • 2.Qxf3#
      • 1...Re6
        • 2.Qxf3#
      • 1...Bxf7!
    • 1.Qa8?
      • threat
        • 2.Qxc6#
      • 1...Rxc7
        • 2.Qxf3#
      • 1...Rd6
        • 2.Qxf3#
      • 1...Re6
        • 2.Qxf3#
      • 1...Bxf7!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qc3#
      • 1...cxb4
        • 2.Qd4#
      • 1...Rf4
        • 2.Rxf4#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Re6
        • 2.Sh5#
      • 1...e2
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(c);OGATEB::QAR(C),XR(c)
    • P(e);OGATE,P_SPINR(f)::QAR(C),XR(f)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(g);P-FLIGHT::QAB(C)
      • Refutation
        • R(c);XR(B)
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • R(c);N_GUARD::QAR2(C),XR(c)
        • R(c);SBLOCK::S(H)
        • R(f);N_GUARD,P_PINR(F)::R(F),XR(f)
        • R(f);N_GUARD::QAR1(C),XR(f)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR(C),XR(f)
      • Vars
        • R(f);OGATE,XP(E)::QAR(C),XR(c)
        • R(f);OGATE,P_PINR(F)::QAR(C),XR(c)
        • R(f);OGATE::QAR(C),XR(c)
      • Refutation
        • B(i);XS(G)
    • Try
      • Q(C);
      • Threat
        • QAR(C),XR(f)
      • Vars
        • R(f);OGATE,XP(E)::QAR(C),XR(c)
        • R(f);OGATE,P_PINR(F)::QAR(C),XR(c)
        • R(f);OGATE::QAR(C),XR(c)
      • Refutation
        • B(i);XS(G)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • P(d);N_GUARD,XP(A)::QAB(C)
      • R(c);N_GUARD::R(B),XR(c)
      • R(c);N_GUARD::QAR1(C),XR(c)
      • R(f);N_GUARD,P_PINR(F)::QAR2(C),XR(f)
      • R(f);SBLOCK::S(H)
      • P(b);OGATE::QAR(C),XR(c)
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