MESON Chess Problem Database

Problem Display
PID: 174721 (1N1n4/8/4p3/1k6/8/bPBK4/2P5/R5Q1 w - - 0 1)

Baumann, Klaus

Die Schwalbe, 2017

1N1n4/8/4p3/1k6/8/bPBK4/2P5/R5Q1

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Ra5#
    • 1...Bb2
      • 2.Ra5#
    • 1...Bd6
      • 2.Ra5#
    • 1...Be7
      • 2.Ra5#
    • 1...Bf8
      • 2.Ra5#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Qb6#
      • 1...Ka6
        • 2.Qb6#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Kc6!
    • 1.Bb4?
      • threat
        • 2.Qc5#
      • 1...Kxb4
        • 2.Qb6#
      • 1...Bxb4
        • 2.c4#
      • 1...Sb7!
  • Keys
    • 1.Ba5!
      • threat
        • 2.Qb6#
      • 1...Kxa5
        • 2.Qc5#
      • 1...Bc5
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(a);OGATE::R1(A)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::QAR1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(E);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT,XB(E)::QAR2(B)
        • B(a);SBLOCK,XB(E)::P(C)
      • Refutation
        • S(d);
  • Actual
    • B(E);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT,P_SPINB(a),XB(E)::QAR2(B)
      • B(a);::P(C)
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