MESON Chess Problem Database

Problem Display
PID: 237379 (b1N5/1k6/r1RBB3/p7/K6b/1N6/8/2R5 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Schach-Aktiv, 2011

b1N5/1k6/r1RBB3/p7/K6b/1N6/8/2R5

#2

7 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Rxb6#
    • 1...Ra7
      • 2.Rb6#
  • Tries
    • 1.Kb5?
      • threat
        • 2.Sc5#
      • 1...Rb6+
        • 2.Rxb6#
      • 1...Rxc6
        • 2.Sxa5#
      • 1...Bf2!
    • 1.Bd5?
      • threat
        • 2.Sc5#
        • 2.Rb6#
      • 1...Rb6
        • 2.Sc5#
        • 2.Rxb6#
      • 1...Bf2
        • 2.Rb6#
      • 1...Rxc6!
    • 1.Rxa6?
      • threat
        • 2.Sc5#
        • 2.Rb6#
        • 2.Ra7#
      • 1...Kxa6
        • 2.Sc5#
      • 1...Bd8
        • 2.Sc5#
        • 2.Ra7#
      • 1...Bf2!
  • Keys
    • 1.Rb1!
      • threat
        • 2.Sxa5#
      • 1...Kxc6
        • 2.Sd4#
      • 1...Rxc6
        • 2.Sc5#
      • 1...Rb6
        • 2.Rxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::R1(D),XR(c)
    • R(c);N_GUARD::R1(D)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • S(B)
      • Vars
        • R(c);CHECK,N_GUARD::R1(D),XR(c)
        • R(c);N_GUARD,XR(D)::S(B),XP(b)
      • Refutation
        • B(a);
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::B(F)+R(D),DCHECK
      • Refutation
        • R(c);P_SPINR(c),XR(D)
    • Try
      • R(D);XR(c)
      • Threat
        • DUALS(3)
      • Vars
        • K(d);S_FLIGHT,XR(D)::S(B)
      • Refutation
        • B(a);
  • Actual
    • R(A);
    • Threat
      • R(A)+S(B),DCHECK,XP(b)
    • Vars
      • K(d);S_FLIGHT,XR(D)::S(B)
      • R(c);SBLOCK,XR(D)::R(A)+S(B),DCHECK
      • R(c);N_GUARD::R1(D),XR(c)
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