MESON Chess Problem Database

Problem Display
PID: 245482 (8/8/8/2K5/8/5N1B/3pk3/1Q1N4 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2001

8/8/8/2K5/8/5N1B/3pk3/1Q1N4

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qa2?
      • 1...Kxd1
        • 2.Qxd2#
      • 1...Kd3
        • 2.Qc4#
      • 1...Kxf3!
    • 1.Qd3+?
      • 1...Kxd1
        • 2.Qxd2#
      • 1...Kxd3!
    • 1.Qg6?
      • 1...Kxf3
        • 2.Qg4#
      • 1...Kxd1!
  • Keys
    • 1.Qb4!
      • 1...Kxd1
        • 2.Qxd2#
      • 1...Kd3
        • 2.Qc4#
      • 1...Kxf3
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT,XS(B)::QAR1(A),XP(a)
        • K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XS(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XS(B)::QAR1(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT,XS(B)::QAR1(A),XP(a)
      • K(b);S_FLIGHT::QAB1(A)
      • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(A)
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