MESON Chess Problem Database

Problem Display
PID: 250690 (3K2B1/1p1pp3/3k1p2/1P2NP2/6Pp/b1R2P2/3rN2Q/r7 w - - 0 1)

Shanshin, Valery Yurevich

3rd Prize, Thessalonika Olympic Ty., 1984

3K2B1/1p1pp3/3k1p2/1P2NP2/6Pp/b1R2P2/3rN2Q/r7

#2

10 + 9

14867 BCPS Library 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sf7#
    • 1...Bc5
      • 2.Sc4#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Sc4#
      • 1...Kxe5
        • 2.Qh2#
      • 1...fxe5
        • 2.Qb6#
      • 1...Rd4
        • 2.Qxd4#
      • 1...e6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sf7#
      • 1...Kxe5
        • 2.Se2#
      • 1...fxe5
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(b);SBLOCK::QAB(B)+S(G),DCHECK
    • B(c);SBLOCK::QAB(B)+S(G),DCHECK
  • Tries
    • Try
      • Q(B);
      • Threat
        • S(G)
      • Vars
        • K(e);OGATEB,S_FLIGHT,XS(G)::QAB(B)
        • P(f);SBLOCK,XS(G)::QAR2(B)
        • R(b);N_GUARD::QAR2(B),XR(b)
      • Refutation
        • P(i);
  • Actual
    • S(A);
    • Threat
      • S(G)
    • Vars
      • K(e);S_FLIGHT,XS(G)::QAB(B)+S(A)
      • P(f);SBLOCK,XS(G)::QAR(B),XR(b)
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