MESON Chess Problem Database

Problem Display
PID: 211381 (8/5K2/2P5/1BPp4/p2k2P1/P5Q1/1R1N1N2/8 w - - 0 1)

Forster, Klaus

Schach-Echo, 1985

8/5K2/2P5/1BPp4/p2k2P1/P5Q1/1R1N1N2/8

#2

10 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3+?
      • 1...Kc3
        • 2.Sd1#
      • 1...Ke3
        • 2.Re2#
      • 1...Kxc5!
    • 1.Rb3?
      • threat
        • 2.Qc3#
        • 2.Qe3#
      • 1...axb3
        • 2.Sxb3#
      • 1...Kxc5!
    • 1.Qf4+?
      • 1...Kc3
        • 2.Sd1#
        • 2.Qb4#
      • 1...Kxc5!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qe3#
      • 1...Kxc5!
    • 1.Qf3?
      • 1...Ke5
        • 2.Qe3#
        • 2.Qf6#
      • 1...Kxc5!
    • 1.Qh3?
      • 1...Ke5
        • 2.Qe3#
      • 1...Kxc5!
  • Keys
    • 1.Qg1!
      • 1...Kc3
        • 2.Sd1#
      • 1...Ke3
        • 2.Sh3#
      • 1...Kxc5
        • 2.Sfe4#
      • 1...Ke5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);S_FLIGHT::S(C)
        • K(b);S_FLIGHT::R1(A)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XR(A)::S(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(E)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(E);
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(E);
      • Vars
        • K(b);S_FLIGHT::QAR2(E)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT::S(C)
      • K(b);S_FLIGHT::QAB(E)+S(C)
      • K(b);S_FLIGHT,XP(H)::QAB(E)+S(C),DCHECK
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