MESON Chess Problem Database

Problem Display
PID: 16258 (6k1/1r6/2P2QK1/b7/8/8/p7/8 w - - 0 1)

Lipton, Michael

The Problemist, 2000

6k1/1r6/2P2QK1/b7/8/8/p7/8

#2

3 + 4

56 The Problemist 2017
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qg7#
    • 1...Rb2
      • 2.Qg7#
    • 1...Rb3
      • 2.Qg7#
    • 1...Rb4
      • 2.Qg7#
    • 1...Rb5
      • 2.Qg7#
    • 1...Rb6
      • 2.Qg7#
      • 2.Qd8#
    • 1...Rc7
      • 2.Qd8#
    • 1...Rg7+
      • 2.Qxg7#
    • 1...Rb8
      • 2.Qg7#
    • 1...Be1
      • 2.Qd8#
    • 1...Bd2
      • 2.Qd8#
    • 1...Bc3
      • 2.Qd8#
    • 1...Bc7
      • 2.Qg7#
    • 1...Bd8
      • 2.Qxd8#
  • Tries
    • 1.Qf7+?
      • 1...Kh8
        • 2.Qe8#
        • 2.Qf8#
      • 1...Rxf7!
  • Keys
    • 1.c7!
      • threat
        • 2.Qg7#
        • 2.Qd8#
      • 1...Rxc7
        • 2.Qd8#
      • 1...Bxc7
        • 2.Qg7#
      • 1...a1Q
        • 2.Qd8#
      • 1...a1B
        • 2.Qd8#
      • 1...Rb6
        • 2.c8Q#
        • 2.c8R#
      • 1...Rb8
        • 2.Qg7#
      • 1...Bc3
        • 2.Qd8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Bb4
        • 2.Qg7#

Anticipated by 178752(1961)

This is after

After Nils Hoeg.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(c);N_GUARD::QAR1(B)
    • R(c);S_CUTB(b)::QAR(B)
    • R(c);CHECK,N_GUARD::QAR1(B),XR(c)
    • B(b);N_GUARD::QAR(B)
    • B(b);S_CUTR(c)::QAR1(B)
    • B(b);N_GUARD::QAR(B),XB(b)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • R(c);XQ(B)
  • Actual
    • P(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(c);XP(A)::QAR(B)
      • B(b);XP(A)::QAR1(B)
      • P(a);::QAR(B)
      • R(c);P_PINQ(B),S_CUTB(b)::P=Q
      • R(c);::QAR1(B)
      • B(b);::QAR1(B)
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