MESON Chess Problem Database

Problem Display
PID: 47310 (8/BR1K4/3Pp2Q/p2N1n2/Rbkpp3/8/8/NB6 w - - 0 1)

Bogdanov, Evgeny Mikhailovich

1st Prize, Solidarity Ty., 1989

8/BR1K4/3Pp2Q/p2N1n2/Rbkpp3/8/8/NB6

#2

9 + 7

4827 FIDE Album (1989-1991) 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qxe6#
    • 1...d3
      • 2.Ba2#
    • 1...exd5
      • 2.Qc1#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Rc7#
      • 1...Kxc3
        • 2.Qc1#
      • 1...dxc3
        • 2.Qxe6#
      • 1...Se7!
    • 1.Raxb4+?
      • 1...Kxd5
        • 2.R7b5#
        • 2.Qxe6#
      • 1...axb4!
    • 1.Rbxb4+?
      • 1...Kxd5
        • 2.Rxa5#
        • 2.Rb5#
        • 2.Qxe6#
      • 1...axb4!
    • 1.Rc7+?
      • 1...Kxd5
        • 2.Qxe6#
      • 1...Kb5!
    • 1.Qd2?
      • threat
        • 2.Ba2#
        • 2.Qa2#
      • 1...exd5
        • 2.Ba2#
        • 2.Qc1#
        • 2.Qc2#
      • 1...Kxd5!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qa2#
      • 1...Kxd5
        • 2.Ba2#
      • 1...exd5
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINB(a),OGATEB,S_FLIGHT,XS(D)::QAB1(F),XP(g)
    • P(c);SBLOCK::B(B)
    • P(g);SBLOCK,XS(D)::QAR(F)
  • Tries
    • Try
      • S(D);
      • Threat
        • R(H)
      • Vars
        • K(b);N_SPINB(a),OGATEB,P-FLIGHT,XS(D)::QAR2(F)
        • P(c);SBLOCK,XS(D)::QAB(F),XP(g)
      • Refutation
        • S(f);
    • Try
      • R(C);CHECK,XB(a)
      • Refutation
        • P(e);XR(C)
    • Try
      • R(H);CHECK,XB(a)
      • Refutation
        • P(e);P_SPINP(e),XR(H)
    • Try
      • R(H);CHECK
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT,XS(D)::QAB1(F),XP(g)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);N_SPINB(a),P_SPINP(c),S_FLIGHT,XS(D)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT,XS(D)::B(B)
      • P(g);SBLOCK,XS(D)::QAR2(F)
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