MESON Chess Problem Database

Problem Display
PID: 138884 (3Rr3/6p1/4n1P1/3RN2p/1K1pk2P/2ppb2Q/2p5/5N1b w - - 0 1)

Chepizhni, Viktor Ivanovich

HM., Na Smenu!, 1965

3Rr3/6p1/4n1P1/3RN2p/1K1pk2P/2ppb2Q/2p5/5N1b

#2

8 + 11

6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Qxf3#
    • 1...Bf4
      • 2.Qxd3#
    • 1...Sf4
      • 2.Sg3#
  • Tries
    • 1.Sxd3?
      • threat
        • 2.Qf5#
      • 1...Kxd3
        • 2.Qxe3#
      • 1...Bf4
        • 2.Sf2#
      • 1...Sf4
        • 2.Sc5#
      • 1...Rf8!
    • 1.Qxh1+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kf5!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Bf4
        • 2.Qxh1#
      • 1...Sf4
        • 2.Sg5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(B),XB(a)
    • B(e);OGATE,SBLOCK::QAB1(B),XP(d)
    • S(i);SBLOCK::S(A)
  • Tries
    • Try
      • S(F);XP(d)
      • Threat
        • QAB1(B)
      • Vars
        • K(g);P_SPINB(e),P_SPINP(f),S_FLIGHT,XS(F)::QAR1(B),XB(e)
        • B(e);N_GUARD,SBLOCK::S(F)
        • S(i);N_GUARD,SBLOCK::S(F)
      • Refutation
        • R(k);
    • Try
      • Q(B);CHECK,XB(a)
      • Vars
        • K(g);P-FLIGHT::QAR1(B)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB1(B)
    • Vars
      • K(g);P-FLIGHT::QAR1(B)
      • B(e);SBLOCK::QAB(B),XB(a)
      • S(i);N_GUARD,SBLOCK,S_CUTB(e)::S(F)
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Developed and maintained by Brian Stephenson.
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