MESON Chess Problem Database

Problem Display
PID: 86757 (8/4NK2/8/8/2Rnk3/1P4Q1/8/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

Lukyanov MT, 1996

8/4NK2/8/8/2Rnk3/1P4Q1/8/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd5?
      • 1...Kf5
        • 2.Qf4#
      • 1...Kxd5!
    • 1.Sc6?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf5!
    • 1.Sc8?
      • 1...Kf5
        • 2.Sd6#
      • 1...Kd5!
    • 1.Sg8?
      • 1...Kd5
        • 2.Sf6#
      • 1...Kf5!
    • 1.Qf2?
      • 1...Ke5
        • 2.Qxd4#
      • 1...Kd3!
    • 1.Qc3?
      • 1...Ke5
        • 2.Qxd4#
      • 1...Kf4!
  • Keys
    • 1.Sg6!
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT,XS(D)
    • Try
      • S(D);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::S(D)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::S(D)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAB1(B),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAB1(B),XS(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(b);N_SPINS(a),S_FLIGHT::QAR1(B)
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