MESON Chess Problem Database

Problem Display
PID: 226556 (K7/8/8/3k1PN1/1Q6/1n4N1/8/8 w - - 0 1)

Stepochkin, Anatoly Viktorovich

Sachova skladba, 1988

K7/8/8/3k1PN1/1Q6/1n4N1/8/8

#2

5 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.S3e4?
      • 1...Kc6
        • 2.Qb7#
      • 1...Sa1
        • 2.Qc5#
      • 1...Sc1
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sa5
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Ke5!
  • Keys
    • 1.S5e4!
      • 1...Ke5
        • 2.Qd6#
      • 1...Kc6
        • 2.Qb7#
      • 1...Sa1
        • 2.Qc5#
      • 1...Sc1
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sa5
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • S(a);N_GUARD::QAR1(B)
        • S(a);N_GUARD::QAR1(B),XS(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAB1(B)
      • S(a);N_GUARD::QAR1(B)
      • S(a);N_GUARD::QAR1(B),XS(a)
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