MESON Chess Problem Database

Problem Display
PID: 240486 (8/1K6/6P1/1Nk2B2/P2RPr2/2N2P2/2b2nQ1/2R3B1 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Themes-64, 1981

8/1K6/6P1/1Nk2B2/P2RPr2/2N2P2/2b2nQ1/2R3B1

#2

12 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Sxb1#
    • 1...Bd1
      • 2.Sxd1#
    • 1...Bxe4+
      • 2.Sxe4#
    • 1...Sxe4
      • 2.Rxe4#
  • Tries
    • 1.Rxc2?
      • threat
        • 2.Sb1#
        • 2.Sd1#
        • 2.Sa2#
        • 2.Se2#
        • 2.Sd5#
      • 1...Sxe4
        • 2.Sxe4#
        • 2.Rxe4#
      • 1...Sd1
        • 2.Sxd1#
      • 1...Rxf3!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qe7#
      • 1...Bxe4+
        • 2.Sxe4#
      • 1...Rxe4
        • 2.Bxe4#
      • 1...Sxe4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);::R(A)+S(D),XB(a)
    • B(a);CHECK,XP(H)::R(A)+S(D),DCHECK,XB(a)
    • S(b);OGATE,XP(H)::B(B)+R(G),XS(b)
  • Tries
    • Try
      • R(A);XB(a)
      • Threat
        • DUALS(5)
      • Vars
        • S(b);::R(A)+S(D),XS(b)
      • Refutation
        • R(c);XP(E)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • B(a);CHECK,XP(H)::R(A)+S(D),DCHECK,XB(a)
      • R(c);OGATE,XP(H)::QAR(C)+B(J),XR(c)
      • S(b);OGATE,XP(H)::B(B)+R(G),XS(b)
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