MESON Chess Problem Database

Problem Display
PID: 103639 (B4Q2/5P2/4P1P1/3pPPNR/5k2/4p2P/2K1RP1N/B7 w - - 0 1)

Lebedkin, Elisey K

Ustiantsiev, V

Intelectualie Egri, 1993

B4Q2/5P2/4P1P1/3pPPNR/5k2/4p2P/2K1RP1N/B7

#2

15 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sgf3?
      • 1...Ke4
        • 2.Qb4#
      • 1...d4
        • 2.Qh6#
      • 1...exf2!
    • 1.Se4?
      • 1...Kxe4
        • 2.Qb4#
      • 1...exf2
        • 2.Qh6#
      • 1...dxe4
        • 2.Qh6#
      • 1...d4!
    • 1.fxe3+?
      • 1...Kg3
        • 2.Sf1#
      • 1...Kxf5!
  • Keys
    • 1.Qh6!
      • 1...Kxf5
        • 2.f8Q#
        • 2.f8R#
      • 1...exf2
        • 2.Se4#
      • 1...d4
        • 2.Sgf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR(O)
        • P(c);::QAB(O)
      • Refutation
        • P(a);XP(D)
    • Try
      • S(I);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XS(I)::QAR(O)
        • P(a);XP(D)::QAB(O)
        • P(c);XS(I)::QAB(O)
      • Refutation
        • P(c);
    • Try
      • P(D);CHECK,XP(a)
      • Vars
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • K(b);P-FLIGHT,XP(H)
  • Actual
    • Q(O);
    • Vars
      • K(b);P-FLIGHT,XP(H)::P=Q
      • P(a);XP(D)::QAB(O)+S(I)
      • P(c);::QAB(O)+S(I)
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