MESON Chess Problem Database

Problem Display
PID: 9862 (4K2B/3R1R2/1P1p4/1bPk4/1P6/8/1N2NP2/4r3 w - - 0 1)

Lipton, Michael

Die Schwalbe, 1960

4K2B/3R1R2/1P1p4/1bPk4/1P6/8/1N2NP2/4r3

#2

10 + 4

3147 Chess Problems: Introduction to an Art 1963
273 Mat Plus 1994
56 The Problemist 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc3#
    • 1...Kc6
      • 2.Rxd6#
    • 1...Ke6
      • 2.Sf4#
  • Keys
    • 1.Rf5+!
      • 1...Ke4
        • 2.Sg3#
      • 1...Kc6
        • 2.Rc7#
      • 1...Ke6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);N_PINS(B),N_SPINP(d),S_FLIGHT::S(B)
    • K(c);N_PINR(G),N_SPINP(d),S_FLIGHT::R1(G),XP(d)
  • Actual
    • R(H);CHECK
    • Vars
      • K(c);N_PINS(B),N_SPINP(d),S_FLIGHT::S(B)
      • K(c);N_PINR(G),N_SPINP(d),S_FLIGHT::R1(G)
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