MESON Chess Problem Database

Problem Display
PID: 219088 (1r6/b7/3Q4/k7/1RP4p/4p2K/1rP5/8 w - - 0 1)

Pater, Karl

Wiener Hausfrauen-Zeitung, 1881

1r6/b7/3Q4/k7/1RP4p/4p2K/1rP5/8

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb8?
      • threat
        • 2.Qb5#
      • 1...Ka6
        • 2.Ra4#
        • 2.Qb5#
      • 1...Rxb4
        • 2.Qxa7#
      • 1...Bb6
        • 2.Qxb6#
      • 1...Bxb8!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Ra6#
      • 1...Ka4
        • 2.Ra6#
      • 1...R2xb6
        • 2.Qa3#
      • 1...R8xb6
        • 2.Qa3#
      • 1...Bxb6
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);XR(f)
      • Threat
        • QAR1(E)
      • Vars
        • R(a);SBLOCK,XR(C)::QAR2(E),XB(e)
        • B(e);N_GUARD::QAB1(E),XB(e)
      • Refutation
        • B(e);XQ(E)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • K(d);P-FLIGHT::R(C)
      • R(a);SBLOCK,XR(C)::QAR2(E)
      • R(f);SBLOCK,XR(C)::QAR2(E)
      • B(e);SBLOCK,XR(C)::QAR2(E)
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