MESON Chess Problem Database

Problem Display
PID: 138887 (6bK/6Q1/1pp5/1N2N1p1/3pkPP1/4P1bR/BqP2R2/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

Rudenko, Valentin Fedorovich

Chess Life & Review, 1973

6bK/6Q1/1pp5/1N2N1p1/3pkPP1/4P1bR/BqP2R2/8

#2

11 + 8

6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf2
      • 2.Sd6#
      • 2.Qg6#
    • 1...Bh2
      • 2.Sd6#
      • 2.Qg6#
    • 1...Bxf4
      • 2.Sd6#
    • 1...Bh4
      • 2.Sd6#
      • 2.Qg6#
    • 1...dxe3
      • 2.Qg6#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Qxc2
        • 2.Qxd4#
      • 1...Qxb5
        • 2.Qxd4#
      • 1...Bxf4
        • 2.Sd2#
      • 1...dxe3
        • 2.Scd6#
      • 1...d3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qe5#
      • 1...Kxe3
        • 2.Qe5#
      • 1...Qxc2
        • 2.Qxd4#
      • 1...Qxb5
        • 2.Qxd4#
      • 1...Bxf4
        • 2.Qg6#
      • 1...dxe3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(b);XP(F)::S(H)
    • P(c);SBLOCK,XP(D)::QAB(J)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAR1(J)
      • Vars
        • K(d);S_FLIGHT::QAR1(J)
        • Q(a);N_GUARD,XP(B)::QAR1(J),XP(c)
        • Q(a);N_GUARD,XS(H)::QAR1(J),XP(c)
        • B(b);XP(F)::S(I)
        • P(c);P_PINQ(J),SBLOCK,XP(D)::S(I)
      • Refutation
        • P(c);P_PINQ(J)
  • Actual
    • S(I);
    • Threat
      • QAR1(J)
    • Vars
      • K(d);P-FLIGHT,P_SPINB(b),XP(D)::QAR2(J)
      • Q(a);N_GUARD,XP(B)::QAR1(J),XP(c)
      • Q(a);N_GUARD,XS(H)::QAR1(J),XP(c)
      • B(b);XP(F)::QAB(J)
      • P(c);P_PINQ(J),SBLOCK,XP(D)::S(H)
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