MESON Chess Problem Database

Problem Display
PID: 54558 (2B5/8/4Q3/1R1NP3/2ppkN2/Rn4p1/3P4/3K2b1 w - - 0 1)

Gorbatenko, Yuri Grigorevich

Slesarenko, Anatoly Vasilevich

3rd Comm., Odessa-90 TT, 1990

2B5/8/4Q3/1R1NP3/2ppkN2/Rn4p1/3P4/3K2b1

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qf5#
    • 1...Sc1
      • 2.Qf5#
    • 1...Sxd2
      • 2.Qf5#
    • 1...Sa5
      • 2.Qf5#
    • 1...Sc5
      • 2.Qf5#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qf5#
        • 2.Qg6#
      • 1...Sc5
        • 2.Sxg3#
        • 2.Sf6#
      • 1...Kf3!
    • 1.Sd3?
      • threat
        • 2.Qf5#
      • 1...Kxd3
        • 2.Qf5#
        • 2.Qg6#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Kf3!
    • 1.Sg6?
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qf5#
      • 1...d3
        • 2.Qg4#
      • 1...Sc5
        • 2.Sf6#
      • 1...Kf3!
    • 1.Sf6+?
      • 1...Kxf4
        • 2.Qg4#
        • 2.Qf5#
      • 1...Kf3!
    • 1.Qg6+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...Kf3!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Sf6#
      • 1...Kxe5
        • 2.Qe6#
      • 1...d3
        • 2.Sg6#
      • 1...Sc5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(b);::QAB1(H)
    • S(b);XP(B)::QAB1(H)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(H)
      • Refutation
        • K(f);P_SPINS(b),S_FLIGHT
    • Try
      • S(D);
      • Threat
        • QAB1(H)
      • Vars
        • S(b);N_GUARD::S(D),XS(b)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(D);
      • Threat
        • QAB1(H)
      • Vars
        • K(f);P_SPINS(b),S_FLIGHT::QAB(H)
        • P(e);SBLOCK::QAR2(H)
        • S(b);::S(F)
      • Refutation
        • K(f);P_SPINS(b),S_FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • K(f);P_SPINS(b),S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);OGATEB,P-FLIGHT,XP(G)::QAR1(H)
      • Refutation
        • K(f);P_SPINS(b),S_FLIGHT
  • Actual
    • Q(H);
    • Threat
      • S(F)
    • Vars
      • K(f);OGATEB,P-FLIGHT,XP(G)::QAR1(H)
      • P(e);SBLOCK::QAR(H)+S(D)
      • S(b);::QAB1(H)
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