MESON Chess Problem Database

Problem Display
PID: 23182 (k7/p1K2p2/2N5/8/8/5Q2/2r5/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

k7/p1K2p2/2N5/8/8/5Q2/2r5/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Sb4#
      • 2.Sd4#
      • 2.Sa5#
      • 2.Se5#
      • 2.Se7#
      • 2.Sb8#
      • 2.Sd8#
    • 1...Rb2
      • 2.Sb4#
    • 1...Rd2
      • 2.Sd4#
    • 1...Rg2
      • 2.Sb4#
      • 2.Sd4#
      • 2.Sa5#
      • 2.Se5#
      • 2.Se7#
      • 2.Sb8#
      • 2.Sd8#
    • 1...Rh2
      • 2.Sb4#
      • 2.Sd4#
      • 2.Sa5#
      • 2.Se5#
      • 2.Se7#
      • 2.Sb8#
      • 2.Sd8#
    • 1...Rxc6+
      • 2.Qxc6#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qe8#
      • 1...Rxc6+
        • 2.Qxc6#
      • 1...Rb2
        • 2.Sb4#
      • 1...Rd2
        • 2.Sd4#
      • 1...Re2!
    • 1.Qa3?
      • threat
        • 2.Qf8#
        • 2.Qxa7#
      • 1...Rb2
        • 2.Qxa7#
      • 1...Ra2
        • 2.Qf8#
      • 1...Rd2
        • 2.Qxa7#
      • 1...Re2
        • 2.Qxa7#
      • 1...Rc5
        • 2.Qxa7#
      • 1...a5
        • 2.Qf8#
        • 2.Qxa5#
      • 1...a6
        • 2.Qf8#
        • 2.Qxa6#
      • 1...Rxc6+!
    • 1.Qe3?
      • threat
        • 2.Qxa7#
        • 2.Qe8#
      • 1...Rb2
        • 2.Qxa7#
      • 1...Ra2
        • 2.Qe8#
      • 1...Rd2
        • 2.Qxa7#
      • 1...Re2
        • 2.Qxa7#
      • 1...Rc5
        • 2.Qe8#
      • 1...a5
        • 2.Qa7#
        • 2.Qe8#
      • 1...a6
        • 2.Qa7#
        • 2.Qe8#
      • 1...Rxc6+!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qd8#
      • 1...Rxc6+
        • 2.Qxc6#
      • 1...Rb2
        • 2.Sb4#
      • 1...Rd2
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(a);N_PINS(B)::QAB(A)+S(B)
    • R(a);CHECK,OGATE,P_SPINR(a),XS(B)::QAB(A),XR(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • R(a);CHECK,OGATE,P_SPINR(a),XS(B)::QAB(A),XR(a)
        • R(a);N_PINS(B)::QAB(A)+S(B)
      • Refutation
        • R(a);N_PINS(B)
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_PINS(B)::QAR1(A),XP(b)
        • R(a);N_PINS(B)::QAR(A)
        • R(a);::QAR1(A),XP(b)
      • Refutation
        • R(a);CHECK,XS(B)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_PINS(B)::QAR1(A),XP(b)
        • R(a);N_PINS(B)::QAR(A)
        • R(a);::QAR(A)
      • Refutation
        • R(a);CHECK,XS(B)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XS(B)::QAB(A),XR(a)
      • R(a);N_PINS(B)::QAB(A)+S(B)
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