MESON Chess Problem Database

Problem Display
PID: 149420 (k5r1/8/K2P4/8/8/8/8/Q6R w - - 0 1)

Aliev, Ilham

ChessStar, 2011

k5r1/8/K2P4/8/8/8/8/Q6R

#2

4 + 2

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rh8
      • 2.Rxh8#
      • 2.Qxh8#
  • Tries
    • 1.Qg7?
      • threat
        • 2.Qa7#
        • 2.Qb7#
        • 2.Qxg8#
      • 1...Kb8
        • 2.Qb7#
        • 2.Qxg8#
      • 1...Rb8
        • 2.Qa7#
      • 1...Rc8
        • 2.Qa7#
        • 2.Qb7#
      • 1...Rd8
        • 2.Qa7#
        • 2.Qb7#
      • 1...Re8
        • 2.Qa7#
        • 2.Qb7#
      • 1...Rf8
        • 2.Qxf8#
        • 2.Qa7#
        • 2.Qb7#
      • 1...Rh8
        • 2.Rxh8#
        • 2.Qxh8#
        • 2.Qa7#
        • 2.Qb7#
      • 1...Rxg7!
    • 1.Qh8?
      • threat
        • 2.Qxg8#
      • 1...Kb8
        • 2.Qxg8#
      • 1...Rxh8
        • 2.Rxh8#
      • 1...Rc8
        • 2.Qxc8#
      • 1...Rd8
        • 2.Qxd8#
      • 1...Re8
        • 2.Qxe8#
      • 1...Rf8
        • 2.Qxf8#
      • 1...Rb8!
  • Keys
    • 1.Rh8!
      • threat
        • 2.Rxg8#
      • 1...Kb8
        • 2.Rxg8#
      • 1...Rxh8
        • 2.Qxh8#
      • 1...Rb8
        • 2.Qh1#
      • 1...Rc8
        • 2.Rxc8#
      • 1...Rd8
        • 2.Rxd8#
      • 1...Re8
        • 2.Rxe8#
      • 1...Rf8
        • 2.Rxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • R(b);::QAR1(A)
      • Refutation
        • R(b);XQ(A)
    • Try
      • Q(A);P_PINR(b)
      • Threat
        • QAR(A),XR(b)
      • Vars
        • K(a);P-FLIGHT::QAR(A),XR(b)
        • R(b);N_SPINR(b),OGATE,XQ(A)::R(B),XR(b)
        • R(b);OGATE::QAR2(A),XR(b)
        • R(b);OGATE::QAR(A),XR(b)
      • Refutation
        • R(b);
  • Actual
    • R(B);P_PINR(b)
    • Threat
      • R(B),XR(b)
    • Vars
      • K(a);P-FLIGHT::R(B),XR(b)
      • R(b);N_SPINR(b),OGATE,XR(B)::QAB1(A),XR(b)
      • R(b);::QAB(A)
      • R(b);OGATE::R(B),XR(b)
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