MESON Chess Problem Database

Problem Display
PID: 230965 (4RK1k/3r1R1p/7P/8/8/8/8/8 w - - 0 1)

Atanasov, Borislav

Kudesnik, 2015

4RK1k/3r1R1p/7P/8/8/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Ke7#
    • 1...Rd2
      • 2.Ke7#
    • 1...Rd3
      • 2.Ke7#
    • 1...Rd4
      • 2.Ke7#
    • 1...Rd5
      • 2.Ke7#
    • 1...Rd6
      • 2.Ke7#
    • 1...Re7
      • 2.Kxe7#
    • 1...Rxf7+
      • 2.Kxf7#
  • Tries
    • 1.Rfe7?
      • threat
        • 2.Kf7#
      • 1...Rxe7
        • 2.Kxe7#
      • 1...Rd8!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Rg8#
      • 1...Rf7+
        • 2.Kxf7#
      • 1...Rxg7
        • 2.hxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(a);::R(C)+K(D)
    • R(a);::R(C)+K(D),XR(a)
    • R(a);CHECK,XR(B)::R(C)+K(D),XR(a)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(C)+K(D)
      • Vars
        • R(a);XR(B)::R(C)+K(D),XR(a)
      • Refutation
        • R(a);P_PINR(C)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • R(a);CHECK::R(C)+K(D),XR(a)
      • R(a);OGATE,XR(B)::P(A),XR(a)
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