MESON Chess Problem Database

Problem Display
PID: 239565 (4n1q1/2P2pp1/QK6/2Bk1BbR/1P1N1p2/3p4/6r1/4Rb2 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2002

4n1q1/2P2pp1/QK6/2Bk1BbR/1P1N1p2/3p4/6r1/4Rb2

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qa2#
    • 1...Ra2
      • 2.Qxa2#
    • 1...Rg3
      • 2.Qa2#
    • 1...Rg4
      • 2.Qa2#
    • 1...Bh4
      • 2.Be4#
      • 2.Be6#
    • 1...Bf6
      • 2.Be4#
      • 2.Be6#
    • 1...Bh6
      • 2.Be4#
      • 2.Be6#
    • 1...Be7
      • 2.Be4#
      • 2.Be6#
    • 1...Bd8
      • 2.Be4#
      • 2.Be6#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Re5#
      • 1...Re2
        • 2.Qxd3#
      • 1...Be2
        • 2.Qa2#
      • 1...Bf6
        • 2.Be6#
      • 1...f6!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Re5#
      • 1...Re2
        • 2.Qxd3#
      • 1...Be2
        • 2.Qa2#
      • 1...Bf6
        • 2.Be6#
      • 1...f6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::QAB(G)
    • R(b);N_GUARD::QAB(G),XR(b)
  • Tries
    • Try
      • S(C);
      • Threat
        • R1(A)
      • Vars
        • R(b);S_CUTB(a)::QAR2(G),XP(c)
        • B(a);S_CUTR(b)::QAB(G)
        • B(f);::R(F)+B(E),DCHECK
      • Refutation
        • P(g);
  • Actual
    • S(C);
    • Threat
      • R1(A)
    • Vars
      • R(b);S_CUTB(a)::QAR2(G),XP(c)
      • B(a);S_CUTR(b)::QAB(G)
      • B(f);::R(F)+B(E),DCHECK
      • P(g);S_CUTB(f)::S(C)
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