MESON Chess Problem Database

Problem Display
PID: 177780 (3Q2nK/R2n2p1/1N1pk2p/7P/q1pPB3/2N2b2/8/1r3R2 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Comm., Sahs (Latvia), 1985

3Q2nK/R2n2p1/1N1pk2p/7P/q1pPB3/2N2b2/8/1r3R2

#2

9 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Bd5#
    • 1...Bd1
      • 2.Bd5#
    • 1...Be2
      • 2.Bd5#
    • 1...Bg4
      • 2.Bd5#
    • 1...Bxh5
      • 2.Bd5#
    • 1...Se5
      • 2.d5#
  • Tries
    • 1.Sbd5?
      • threat
        • 2.Qxg8#
      • 1...Kf7
        • 2.Qxg8#
      • 1...Bxh5
        • 2.Sc7#
      • 1...Se5
        • 2.Sf4#
      • 1...Sdf6
        • 2.Sf4#
      • 1...Sf8
        • 2.Sf4#
      • 1...Sgf6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...Rb8!
    • 1.Qxd7+?
      • 1...Kf6
        • 2.Qf5#
      • 1...Qxd7!
    • 1.Qxg8+?
      • 1...Ke7
        • 2.Scd5#
        • 2.Sbd5#
      • 1...Kf6!
    • 1.d5+?
      • 1...Kf7
        • 2.Bg6#
      • 1...Ke5!
  • Keys
    • 1.Scd5!
      • threat
        • 2.Qxg8#
      • 1...Kf7
        • 2.Qxg8#
      • 1...Bxh5
        • 2.Sc7#
      • 1...Se5
        • 2.Sf4#
      • 1...Sdf6
        • 2.Sf4#
      • 1...Sf8
        • 2.Sf4#
      • 1...Sgf6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • K(f);P_SPINB(b),P_SPINS(h),S_FLIGHT::B(D)
    • B(b);N_GUARD::B(D)
    • B(b);N_GUARD,XP(E)::B(D)
    • S(h);SBLOCK::P(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB(H),XS(j)
      • Vars
        • K(f);P_SPINB(b),P_SPINS(h),S_FLIGHT::QAB1(H),XS(j)
        • B(b);XP(E)::S(F)
        • S(h);::S(F)
        • S(j);N_GUARD::QAR1(H)
        • S(j);N_GUARD::QAR1(H),XS(j)
      • Refutation
        • R(a);
    • Try
      • Q(H);CHECK,XS(h)
      • Vars
        • K(f);OGATE,P-FLIGHT,P_SPINB(b)::QAR1(H)
      • Refutation
        • Q(c);XQ(H)
    • Try
      • Q(H);CHECK,XS(j)
      • Refutation
        • K(f);P-FLIGHT,P_SPINB(b)
    • Try
      • P(C);CHECK
      • Vars
        • K(f);P_SPINB(b),P_SPINS(h),S_FLIGHT::B(D)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAB(H),XS(j)
    • Vars
      • K(f);P_SPINB(b),P_SPINS(h),S_FLIGHT::QAB1(H),XS(j)
      • B(b);XP(E)::S(B)
      • S(h);::S(B)
      • S(j);N_GUARD::QAR1(H)
      • S(j);N_GUARD::QAR1(H),XS(j)
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