MESON Chess Problem Database

Problem Display
PID: 57243 (Q1n4n/1b1pp3/4p3/1Pppk1B1/4N3/4N3/3P4/bB2RK2 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Markovtsy, Vassyl Yuriovich

Comm., Troll, 1996

Q1n4n/1b1pp3/4p3/1Pppk1B1/4N3/4N3/3P4/bB2RK2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxa1#
    • 1...Sb6
      • 2.Qxh8#
    • 1...Sd6
      • 2.Qxh8#
    • 1...Sa7
      • 2.Qxh8#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sf5#
      • 1...Kd4
        • 2.Qxa1#
      • 1...Kd6
        • 2.Qb8#
      • 1...Bd4
        • 2.Sc4#
      • 1...Sd6
        • 2.Qxh8#
      • 1...d4!
    • 1.Sc3?
      • threat
        • 2.Sf5#
      • 1...Kd6
        • 2.Qb8#
      • 1...Sd6
        • 2.Qxh8#
      • 1...d4
        • 2.Sc4#
      • 1...Kd4!
    • 1.Sg3?
      • threat
        • 2.Sef5#
      • 1...Kd4
        • 2.Qxa1#
      • 1...Kd6
        • 2.Qb8#
      • 1...Bd4
        • 2.Sc4#
      • 1...Sd6
        • 2.Qxh8#
      • 1...d4!
    • 1.Sf6?
      • threat
        • 2.Sf5#
      • 1...Kd4
        • 2.Qxa1#
      • 1...Kd6
        • 2.Qb8#
      • 1...d4
        • 2.Sc4#
      • 1...Bd4
        • 2.Sc4#
      • 1...Sd6!
    • 1.Bf4+?
      • 1...Kd4
        • 2.Qxa1#
      • 1...Kxf4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sef5#
      • 1...Kd4
        • 2.Qxa1#
      • 1...Kxd6
        • 2.Qb8#
      • 1...Sxd6
        • 2.Qxh8#
      • 1...d4
        • 2.Sdc4#
      • 1...Bd4
        • 2.Sec4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(d);S_FLIGHT::QAB(I),XB(a)
    • S(i);OGATE::QAB(I),XS(j)
  • Tries
    • Try
      • S(F);
      • Threat
        • R(B)+S(E)
      • Vars
        • K(d);S_FLIGHT::QAB(I),XB(a)
        • K(d);S_FLIGHT::QAB(I)
        • B(a);SBLOCK::R(B)+S(E),DCHECK
        • S(i);OGATE,SBLOCK::QAB(I),XS(j)
      • Refutation
        • P(c);
    • Try
      • S(F);
      • Threat
        • R(B)+S(E)
      • Vars
        • K(d);S_FLIGHT::QAB(I)
        • S(i);OGATE,SBLOCK::QAB(I),XS(j)
        • P(c);SBLOCK::R(B)+S(E),DCHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);
      • Threat
        • R(B)+S(E)
      • Vars
        • K(d);S_FLIGHT::QAB(I),XB(a)
        • K(d);S_FLIGHT::QAB(I)
        • B(a);SBLOCK::R(B)+S(E),DCHECK
        • S(i);OGATE,SBLOCK::QAB(I),XS(j)
      • Refutation
        • P(c);
    • Try
      • S(F);
      • Threat
        • R(B)+S(E)
      • Vars
        • K(d);S_FLIGHT::QAB(I),XB(a)
        • K(d);S_FLIGHT::QAB(I)
        • P(c);SBLOCK::R(B)+S(E),DCHECK
        • B(a);SBLOCK::R(B)+S(E),DCHECK
      • Refutation
        • S(i);
    • Try
      • B(H);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB(I),XB(a)
      • Refutation
        • K(d);S_FLIGHT,XB(H)
  • Actual
    • S(F);
    • Threat
      • R(B)+S(E)
    • Vars
      • K(d);S_FLIGHT::QAB(I),XB(a)
      • K(d);OGATEB,S_FLIGHT,XS(F)::QAB(I)
      • S(i);OGATE,SBLOCK,XS(F)::QAB(I),XS(j)
      • P(c);N_GUARD,SBLOCK::S(F)
      • B(a);SBLOCK::R(B)+S(E),DCHECK
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