MESON Chess Problem Database

Problem Display
PID: 162407 (8/1qN2Qpb/2p3p1/1rNr4/1PkP3R/P4R2/4P3/b4B1K w - - 0 1)

Dyachuk, Vasyl Vasilovich

1st HM., The Problemist, 2016

8/1qN2Qpb/2p3p1/1rNr4/1PkP3R/P4R2/4P3/b4B1K

#2

11 + 9

56 The Problemist 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.e3#
    • 1...Bxd4
      • 2.e4#
  • Tries
    • 1.S5e6?
      • threat
        • 2.e4#
      • 1...Rxd4
        • 2.Sc5#
      • 1...Bc3!
    • 1.Rc3+?
      • 1...Bxc3
        • 2.e3#
      • 1...Kxc3!
    • 1.Qxg7?
      • threat
        • 2.e4#
      • 1...Rxd4
        • 2.Qf7#
      • 1...Re5!
  • Keys
    • 1.S7e6!
      • threat
        • 2.e4#
      • 1...Rxd4
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK::B(A)+P(C)
    • B(a);P_SPINB(a),SBLOCK,XP(G)::B(A)+P(C)
  • Tries
    • Try
      • S(I);N_PINR(d)
      • Threat
        • B(A)+P(C)
      • Vars
        • R(d);P_SPINR(d),XP(G)::QAB(K)+S(I)
      • Refutation
        • B(a);
    • Try
      • R(E);CHECK
      • Vars
        • B(a);SBLOCK,XR(E)::B(A)+P(C)
      • Refutation
        • K(b);N_SPINR(d),P-FLIGHT,XR(E)
    • Try
      • Q(K);N_PINR(d),XP(h)
      • Threat
        • B(A)+P(C)
      • Vars
        • R(d);OGATEB,P_SPINR(d),XP(G)::QAB(K)
      • Refutation
        • R(d);
  • Actual
    • S(J);N_PINR(d)
    • Threat
      • B(A)+P(C)
    • Vars
      • R(d);P_SPINR(d),XP(G)::QAB(K)+S(J)
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