MESON Chess Problem Database

Problem Display
PID: 96564 (1k1b4/1r1P4/Q7/4R2K/5Rp1/8/7B/8 w - - 0 1)

Milewski, Stefan

Problemesis, 2004

1k1b4/1r1P4/Q7/4R2K/5Rp1/8/7B/8

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qc8#
  • Tries
    • 1.Rb4?
      • threat
        • 2.Rxb7#
        • 2.Qxb7#
      • 1...Kc7
        • 2.Rxb7#
      • 1...Rxb4
        • 2.Rb5#
      • 1...Rb5
        • 2.Rexb5#
      • 1...Bb6
        • 2.Re8#
      • 1...Rb6!
    • 1.Rc5?
      • threat
        • 2.Rc8#
      • 1...Rc7
        • 2.Rb4#
      • 1...Bc7
        • 2.Rf8#
      • 1...Rb5!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Rc8#
      • 1...Rc7
        • 2.Rb5#
      • 1...Bc7
        • 2.Re8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE,SBLOCK::QAR1(E)
  • Tries
    • Try
      • R(B);P_PINR(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);N_SPINR(b),S_FLIGHT::R1(B),XR(b)
        • R(b);N_SPINR(b),XR(B)::B(A)+R(C),DCHECK
        • R(b);P_PINR(C)::B(A)+R(C),DCHECK,XR(b)
        • B(d);N_SPINR(b)::B(A)+R(C),DCHECK
      • Refutation
        • R(b);
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • R(b);S_CUTB(d),S_CUTP(a)::R(B)
        • B(d);S_CUTP(a),S_CUTR(b)::R(B)
      • Refutation
        • R(b);P_PINR(C)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • R(b);S_CUTB(d),S_CUTP(a)::R(C)
      • B(d);S_CUTP(a),S_CUTR(b)::R(C)
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