MESON Chess Problem Database

Problem Display
PID: 221418 (Q2R1N2/8/2rn4/1p1knR2/1Kp1r3/1PP2B2/1N6/8 w - - 0 1)

Kratschmer, Ralf

SuperProblem 158. TT, 2015

Q2R1N2/8/2rn4/1p1knR2/1Kp1r3/1PP2B2/1N6/8

#2

9 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sa4?
      • threat
        • 2.Sb6#
      • 1...bxa4
        • 2.bxc4#
      • 1...cxb3+!
  • Keys
    • 1.Sxc4!
      • 1...bxc4
        • 2.bxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(c);N_GUARD,XS(A)::P(B),XP(a)
      • Refutation
        • P(a);CHECK,XP(B)
  • Actual
    • S(A);P_SPINS(A),XP(a)
    • Vars
      • P(c);OGATE,XS(A)::P(B),XP(c)
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