MESON Chess Problem Database

Problem Display
PID: 211428 (1k6/6r1/1K3Pb1/8/4Q3/8/8/8 w - - 0 1)

Kirchner, Imre

Land og Folk, 1977

1k6/6r1/1K3Pb1/8/4Q3/8/8/8

#2

3 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb7+
      • 2.Qxb7#
    • 1...Rf7
      • 2.Qe8#
    • 1...Rg8
      • 2.Qb7#
    • 1...Bf7
      • 2.Qb7#
    • 1...Bh7
      • 2.Qe8#
    • 1...Be8
      • 2.Qxe8#
  • Tries
    • 1.fxg7?
      • threat
        • 2.Qb7#
      • 1...Bxe4
        • 2.g8Q#
        • 2.g8R#
      • 1...Kc8!
  • Keys
    • 1.f7!
      • threat
        • 2.Qb7#
        • 2.Qe8#
      • 1...Kc8
        • 2.Qe8#
      • 1...Rxf7
        • 2.Qe8#
      • 1...Bxe4
        • 2.f8Q#
        • 2.f8R#
      • 1...Bxf7
        • 2.Qb7#
      • 1...Rg8
        • 2.Qb7#
      • 1...Bf5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(b);CHECK,N_GUARD::QAR1(A),XR(b)
    • R(b);S_CUTB(a)::QAR(A)
    • R(b);N_GUARD::QAR1(A)
    • B(a);S_CUTR(b)::QAR1(A)
    • B(a);N_GUARD::QAR(A)
    • B(a);N_GUARD::QAR(A),XB(a)
  • Tries
    • Try
      • P(C);XR(b)
      • Threat
        • QAR1(A)
      • Vars
        • B(a);N_GUARD,XQ(A)::P=Q
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • P(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P-FLIGHT::QAR2(A)
      • R(b);XP(C)::QAR(A)
      • B(a);N_GUARD,XQ(A)::P=Q
      • B(a);XP(C)::QAR1(A)
      • R(b);::QAR1(A)
      • B(a);::QAR1(A)
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