MESON Chess Problem Database

Problem Display
PID: 108900 (3N3K/7p/R7/4kpp1/6r1/3Q4/8/6b1 w - - 0 1)

Lissner, Morris

L'Opinion Publique, 1897

3N3K/7p/R7/4kpp1/6r1/3Q4/8/6b1

#2

4 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qd6#
    • 1...Rf4
      • 2.Sf7#
      • 2.Re6#
    • 1...f4
      • 2.Sf7#
      • 2.Re6#
  • Tries
    • 1.Ra5+?
      • 1...Kf4
        • 2.Se6#
        • 2.Rxf5#
      • 1...Kf6
        • 2.Qd6#
      • 1...Bc5!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Rxf5#
      • 1...Kf4
        • 2.Rxf5#
      • 1...Kxf6
        • 2.Qd6#
      • 1...Rd4
        • 2.Qxf5#
      • 1...Bd4
        • 2.Qxf5#
      • 1...Re4
        • 2.Qd6#
      • 1...Rf4
        • 2.Re6#
      • 1...f4
        • 2.Rf5#
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::QAB1(A)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • R(B);
    • Threat
      • R1(B),XP(d)
    • Vars
      • K(c);P_SPINP(d),S_FLIGHT::R1(B),XP(d)
      • K(c);S_FLIGHT,XR(B)::QAR2(A)
      • R(b);SBLOCK::QAR1(A),XP(d)
      • B(a);SBLOCK::QAR1(A),XP(d)
      • R(b);SBLOCK::QAB1(A)
      • R(b);SBLOCK::R1(B)
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