MESON Chess Problem Database

Problem Display
PID: 196518 (b2R4/1R3p2/3K2p1/2p1p1QB/N4N1b/8/3k1p1q/2r2n2 w - - 0 1)

Muller, Dieter

Sp. HM., Suomen Shakki, 1985

b2R4/1R3p2/3K2p1/2p1p1QB/N4N1b/8/3k1p1q/2r2n2

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Sd3#
    • 1...Kc2
      • 2.Rb2#
  • Tries
    • 1.Kxe5+?
      • 1...Kc2
        • 2.Rb2#
      • 1...Ke3
        • 2.Rd3#
      • 1...Ke1!
    • 1.Kc6+?
      • 1...Ke1
        • 2.Sd3#
      • 1...Ke3
        • 2.Qxe5#
      • 1...Kc2!
    • 1.Ke7+?
      • 1...Ke1
        • 2.Sd3#
      • 1...Kc2
        • 2.Rb2#
      • 1...Ke3!
  • Keys
    • 1.Kc7+!
      • 1...Ke1
        • 2.Sd3#
      • 1...Kc2
        • 2.Rb2#
      • 1...Ke3
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(B)
    • K(c);P-FLIGHT::R1(F)
  • Tries
    • Try
      • K(E);CHECK,P_SPINS(B),S_FLIGHT,XP(h)
      • Vars
        • K(c);P-FLIGHT::R1(F)
        • K(c);S_FLIGHT::R1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(E);CHECK,P-FLIGHT,P_SPINR(F)
      • Vars
        • K(c);S_FLIGHT::S(B)
        • K(c);S_FLIGHT::QAR2(C),XP(h)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • K(E);CHECK,P_SPINQ(C),S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::S(B)
        • K(c);P-FLIGHT::R1(F)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • K(E);CHECK,S_FLIGHT
    • Vars
      • K(c);S_FLIGHT::S(B)
      • K(c);P-FLIGHT::R1(F)
      • K(c);S_FLIGHT::QAR2(C),XP(h)
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