MESON Chess Problem Database

Problem Display
PID: 245935 (2Q5/8/3k1K2/3p4/5R2/3b4/3N4/8 w - - 0 1)

Kopyl, Valery Volodimirovich

Kudesnik, 2011

2Q5/8/3k1K2/3p4/5R2/3b4/3N4/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Rxd4#
  • Tries
    • 1.Sc4+?
      • 1...dxc4
        • 2.Rd4#
      • 1...Bxc4!
    • 1.Rb4?
      • threat
        • 2.Rb6#
      • 1...d4
        • 2.Rxd4#
      • 1...Bb5!
  • Keys
    • 1.Rd4!
      • 1...Bf1
        • 2.Se4#
      • 1...Bb1
        • 2.Sc4#
      • 1...Bc2
        • 2.Sc4#
      • 1...Be2
        • 2.Se4#
      • 1...Bc4
        • 2.Sxc4#
        • 2.Se4#
      • 1...Be4
        • 2.Sc4#
        • 2.Sxe4#
      • 1...Bb5
        • 2.Se4#
      • 1...Bf5
        • 2.Sc4#
      • 1...Ba6
        • 2.Se4#
      • 1...Bg6
        • 2.Sc4#
      • 1...Bh7
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATEB::R(B),XP(b)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • P(b);S_CUTB(a),XS(A)::R(B)
      • Refutation
        • B(a);XS(A)
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • B(a);
  • Actual
    • R(B);P_PINP(b)
    • Vars
      • B(a);N_GUARD::S(A)
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