MESON Chess Problem Database

Problem Display
PID: 196763 (5K2/2pN4/2Pp4/3k4/P4p1R/2P2NRB/8/8 w - - 0 1)

Nabokov, Vladimir Vladimirovich

Source?, 1919

5K2/2pN4/2Pp4/3k4/P4p1R/2P2NRB/8/8

#2

9 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4?
      • 1...Ke4
        • 2.Bg2#
      • 1...fxg3
        • 2.Be6#
      • 1...f3
        • 2.Be6#
      • 1...Kc4!
    • 1.Rh5+?
      • 1...Kc4
        • 2.Sd2#
      • 1...Ke4
        • 2.Sd2#
      • 1...Kxc6!
  • Keys
    • 1.Bg2!
      • 1...Kc4
        • 2.Sd2#
      • 1...Ke4
        • 2.Sd4#
      • 1...Kxc6
        • 2.Sfe5#
      • 1...Ke6
        • 2.Sd4#
      • 1...fxg3
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::B(D)
        • P(a);XR(C)::B(D)
        • P(a);::B(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
  • Actual
    • B(D);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::S(B)
      • K(b);P_SPINP(a),S_FLIGHT::B(D)+S(B)
      • K(b);S_FLIGHT,XP(G)::B(D)+S(B),DCHECK
      • K(b);S_FLIGHT::S(B)
      • P(a);N_GUARD,XR(C)::B(D)+S(B)
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