MESON Chess Problem Database

Problem Display
PID: 187259 (2B5/2p5/3p4/r2k3K/pRN5/3p1NP1/Q6n/n5B1 w - - 0 1)

Dyachuk, Vasyl Vasilovich

4th Prize, Het Belgisch Schaakbord (L'Echiquier Belge), 1996-1997

2B5/2p5/3p4/r2k3K/pRN5/3p1NP1/Q6n/n5B1

#2

8 + 8

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4+
      • 2.Sce5#
    • 1...Kc6+
      • 2.Sxa5#
    • 1...Sc2
      • 2.Sxa5#
      • 2.Sce5#
    • 1...c6
      • 2.Sb6#
  • Tries
    • 1.Se3+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc6+!
    • 1.Be6+?
      • 1...Ke4+
        • 2.Sce5#
      • 1...Kc6+
        • 2.Sxa5#
      • 1...Kxe6+!
    • 1.Bb7+?
      • 1...c6
        • 2.Sb6#
      • 1...Ke6+!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Sxh2#
      • 1...Ke4+
        • 2.Sg5#
      • 1...Kc6+
        • 2.Sfe5#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Sf1
        • 2.Se1#
        • 2.Sfd2#
        • 2.Sh2#
        • 2.Sh4#
        • 2.Sfe5#
        • 2.Sg5#
      • 1...Sg4
        • 2.Se1#
        • 2.Sfd2#
        • 2.Sh2#
        • 2.Sh4#
        • 2.Sfe5#
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(f);CHECK,S_FLIGHT::R(E)+S(F)
    • K(f);CHECK,S_FLIGHT::S(F),XR(e)
    • P(h);SBLOCK::QAB(B)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR1(B)
      • Refutation
        • K(f);CHECK,S_FLIGHT
    • Try
      • B(H);CHECK
      • Vars
        • K(f);CHECK,S_FLIGHT::R(E)+S(F)
        • K(f);CHECK,S_FLIGHT::S(F),XR(e)
      • Refutation
        • K(f);CHECK,S_FLIGHT,XB(H)
    • Try
      • B(H);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB(B)+S(F),DCHECK
      • Refutation
        • K(f);CHECK,S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB(B)+S(C),XS(b)
    • Vars
      • K(f);CHECK,S_FLIGHT::QAB(B)+S(C),DCHECK
      • S(b);OGATE,P_SPINS(b),XS(C)::QAB(B),XS(b)
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