MESON Chess Problem Database

Problem Display
PID: 189644 (8/8/pNK5/k7/1p6/r1pPP3/P7/Q7 w - - 0 1)

von Sponer, Gyorgy Janos Andor

Magyar Sakkujsag, 1911

8/8/pNK5/k7/1p6/r1pPP3/P7/Q7

#2

6 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.Qxa2#
    • 1...Rb3
      • 2.axb3#
    • 1...Ra4
      • 2.Sc4#
    • 1...c2
      • 2.Qe5#
    • 1...b3
      • 2.Qxc3#
  • Tries
    • 1.Kc5?
      • 1...Rxa2
        • 2.Qxa2#
      • 1...Rb3
        • 2.axb3#
      • 1...Ra4
        • 2.Sc4#
      • 1...b3
        • 2.Qxc3#
      • 1...c2!
    • 1.Qd1?
      • threat
        • 2.Sc4#
        • 2.Qh5#
      • 1...Rb3
        • 2.Qh5#
      • 1...c2
        • 2.Qh5#
      • 1...b3!
    • 1.d4?
      • 1...Rxa2
        • 2.Qxa2#
      • 1...b3
        • 2.Qxc3#
      • 1...Rb3
        • 2.axb3#
      • 1...Ra4
        • 2.Sc4#
      • 1...c2!
  • Keys
    • 1.e4!
      • 1...Rxa2
        • 2.Qxa2#
      • 1...b3
        • 2.Qxc3#
      • 1...Rb3
        • 2.axb3#
      • 1...Ra4
        • 2.Sc4#
      • 1...c2
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,P_SPINR(a),XP(B)::QAR(A),XR(a)
    • R(a);OGATE::QAR(A)+P(B),XR(a)
    • R(a);SBLOCK::S(E)
    • P(b);OGATE::QAR(A)
    • P(c);OGATEB::QAB(A),XP(b)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • R(a);OGATE,P_SPINR(a),XP(B)::QAR(A),XR(a)
        • R(a);OGATE::QAR(A)+P(B),XR(a)
        • R(a);SBLOCK::S(E)
        • P(c);OGATEB::QAB(A),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAB1(A)
        • P(b);::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • P(C);
      • Vars
        • R(a);OGATE,P_SPINR(a),XP(B)::QAR(A),XR(a)
        • P(c);OGATEB::QAB(A),XP(b)
        • R(a);OGATE::QAR(A)+P(B),XR(a)
        • R(a);SBLOCK::S(E)
      • Refutation
        • P(b);
  • Actual
    • P(D);
    • Vars
      • R(a);OGATE,P_SPINR(a),XP(B)::QAR(A),XR(a)
      • P(c);OGATEB::QAB(A),XP(b)
      • R(a);OGATE::QAR(A)+P(B),XR(a)
      • R(a);SBLOCK::S(E)
      • P(b);OGATE::QAR(A)
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