MESON Chess Problem Database

Problem Display
PID: 87004 (6B1/8/2QP4/4P1B1/3k4/4n3/5R2/2K5 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Hlas l'udu, 1983

6B1/8/2QP4/4P1B1/3k4/4n3/5R2/2K5

#2

7 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Rd2#
    • 1...Kxe5
      • 2.Bf6#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Rd2#
      • 1...Kd3
        • 2.Rd2#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sf1
        • 2.Qc4#
      • 1...Sd5!
    • 1.Re2?
      • 1...Kd3
        • 2.Rd2#
      • 1...Kxe5
        • 2.Qd5#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sf1
        • 2.Qc4#
      • 1...Sc2
        • 2.Qc4#
      • 1...Sg2
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sg4
        • 2.Qc4#
      • 1...Sf5
        • 2.Qc4#
      • 1...Sd5!
    • 1.Qd5+?
      • 1...Kc3
        • 2.Qd2#
      • 1...Sxd5!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Rf4#
        • 2.Qxe3#
      • 1...Kxc3!
    • 1.Qc4+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Sxc4!
    • 1.Qc5+?
      • 1...Kd3
        • 2.Qxe3#
      • 1...Ke4
        • 2.Qxe3#
      • 1...Kxc5!
  • Keys
    • 1.Rf3!
      • 1...Kd3
        • 2.Qc4#
      • 1...Kxe5
        • 2.Bf6#
      • 1...Sd1
        • 2.Qd5#
      • 1...Sf1
        • 2.Qd5#
      • 1...Sc2
        • 2.Qd5#
      • 1...Sg2
        • 2.Qd5#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sg4
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sf5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R1(B)
    • K(b);OGATEB,S_FLIGHT,XP(C)::B(D)
  • Tries
    • Try
      • B(D);
      • Threat
        • R(B)
      • Vars
        • K(b);P-FLIGHT::R1(B)
        • S(a);N_GUARD::QAR1(E),XS(a)
        • S(a);N_GUARD::QAR1(E)
      • Refutation
        • S(a);
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::R1(B)
        • K(b);P_SPINS(a),S_FLIGHT,XP(C)::QAR1(E)
        • S(a);N_GUARD::QAR1(E)
        • S(a);N_GUARD::QAR1(E),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • S(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XP(C)::QAB1(E)
      • Refutation
        • S(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(E),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
  • Actual
    • R(B);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::QAB1(E)
      • K(b);OGATEB,S_FLIGHT,XP(C)::B(D)
      • S(a);N_GUARD::QAR1(E)
      • S(a);N_GUARD::QAR1(E),XS(a)
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