MESON Chess Problem Database

Problem Display
PID: 226486 (7b/4N3/1Kpr2P1/2P3P1/4k3/5p2/2PP1P1Q/1N6 w - - 0 1)

Forster, Richard

Kieler Schachgesellschaft, 1981

7b/4N3/1Kpr2P1/2P3P1/4k3/5p2/2PP1P1Q/1N6

#2

10 + 5

16882 KSG-Problemschach 1969-1987 (Muck/Laue) 1993

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qf4#
    • 1...Rd4
      • 2.Sc3#
    • 1...Bd4
      • 2.d3#
  • Tries
    • 1.Sc3+?
      • 1...Kd4
        • 2.Qf4#
      • 1...Bxc3!
    • 1.d3+?
      • 1...Kd4
        • 2.Qf4#
        • 2.Qxd6#
      • 1...Rxd3!
  • Keys
    • 1.d4!
      • threat
        • 2.Qh4#
      • 1...Kxd4
        • 2.Qf4#
      • 1...Rxd4
        • 2.Sc3#
      • 1...Bxd4
        • 2.Sd2#
      • 1...Rf6
        • 2.Qe5#
      • 1...Be5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(E)
    • R(d);SBLOCK,S_CUTB(e)::S(A)
    • B(e);P_PINP(F),SBLOCK,S_CUTR(d)::P(C)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • B(e);XS(A)
    • Try
      • P(C);CHECK
      • Refutation
        • R(d);XP(C)
  • Actual
    • P(C);
    • Threat
      • QAR(E)
    • Vars
      • K(b);P-FLIGHT,XP(C)::QAR2(E)
      • R(d);SBLOCK,XP(C)::S(A)
      • B(e);P_PINP(F),SBLOCK,XP(C)::S(A)
      • R(d);S_CUTB(e)::QAR1(E)
      • B(e);N_GUARD::QAR1(E),XB(e)
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