MESON Chess Problem Database

Problem Display
PID: 248426 (3R4/b7/2ppk1K1/1npN4/8/1P3P2/4B2B/3R3b w - - 0 1)

Krivenko, Valery Aleksinovich

Comm., Novi Sad Olympic Ty., 1990

3R4/b7/2ppk1K1/1npN4/8/1P3P2/4B2B/3R3b

#2

8 + 7

14867 BCPS Library 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Rxd6#
    • 1...Sc3
      • 2.Rxd6#
    • 1...Sd4
      • 2.Rxd6#
    • 1...Sc7
      • 2.Rxd6#
  • Tries
    • 1.Sf4+?
      • 1...Ke5
        • 2.Re8#
      • 1...Ke7!
    • 1.Sf6?
      • threat
        • 2.Re8#
      • 1...Ke7
        • 2.Re8#
      • 1...Sc7!
    • 1.Bc4?
      • threat
        • 2.Re1#
      • 1...Sc3
        • 2.Rxd6#
      • 1...Sd4
        • 2.Rxd6#
      • 1...Bxf3!
    • 1.Bxb5?
      • threat
        • 2.Rxd6#
      • 1...cxd5
        • 2.Re1#
        • 2.Re8#
      • 1...Bb8!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Bf5#
      • 1...Kxd5
        • 2.Bc4#
      • 1...cxd5
        • 2.Re1#
      • 1...Sd4
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::R1(H),XP(e)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);P-FLIGHT::R(H)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • S(F);
      • Threat
        • R(H)
      • Vars
        • K(f);P-FLIGHT::R1(H)
      • Refutation
        • S(b);
    • Try
      • B(B);
      • Threat
        • R(A)
      • Vars
        • S(b);N_GUARD::R1(H),XP(e)
      • Refutation
        • B(a);XP(E)
    • Try
      • B(B);XS(b)
      • Threat
        • R1(H),XP(e)
      • Refutation
        • B(g);
  • Actual
    • B(B);
    • Threat
      • B(B)
    • Vars
      • K(f);OGATEB,P_SPINP(e),S_FLIGHT,XS(F)::R(A)+B(B),DCHECK
      • P(d);SBLOCK,XS(F)::R(A)
      • S(b);N_GUARD::R1(H),XP(e)
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