MESON Chess Problem Database

Problem Display
PID: 241599 (8/5B2/5PR1/4Pkp1/4Rp2/3K4/6PB/8 w - - 0 1)

Basisty, Mark Borisovich

Vasilenko, Anatoly Grigorovich

Problemist Ukraini, 2019

8/5B2/5PR1/4Pkp1/4Rp2/3K4/6PB/8

#2

8 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.g4#
  • Tries
    • 1.Kd4?
      • 1...f3
        • 2.g4#
      • 1...g4
        • 2.Rxf4#
      • 1...Kg4!
    • 1.Rxf4+?
      • 1...Kxe5
        • 2.Rf1#
        • 2.Rf2#
        • 2.Rf3#
      • 1...gxf4!
    • 1.Rg7?
      • 1...Kg4
        • 2.Rxf4#
      • 1...f3
        • 2.g4#
      • 1...g4!
    • 1.Rg8?
      • 1...Kg4
        • 2.Rxf4#
      • 1...f3
        • 2.g4#
      • 1...g4!
  • Keys
    • 1.Rh6!
      • 1...Kg4
        • 2.Be6#
      • 1...g4
        • 2.Rh5#
      • 1...f3
        • 2.g4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::P(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(a);N_GUARD::P(A)
        • P(c);N_GUARD::R1(D),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • R(D);CHECK,XP(a)
      • Refutation
        • P(c);XR(D)
    • Try
      • R(G);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(c);
    • Try
      • R(G);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(c);
  • Actual
    • R(G);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::B(H)
      • P(c);OGATEB,SBLOCK::R(G)
      • P(a);N_GUARD::P(A)
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