MESON Chess Problem Database

Problem Display
PID: 110473 (8/4rP2/3R1QB1/3N1P2/1r2k3/3p2K1/8/8 w - - 0 1)

Fleck, Ferenc

Lud, 1964

8/4rP2/3R1QB1/3N1P2/1r2k3/3p2K1/8/8

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qxe7#
    • 1...Re5
      • 2.Qh4#
    • 1...Re6
      • 2.fxe6#
    • 1...Re8
      • 2.fxe8Q#
      • 2.fxe8R#
  • Tries
    • 1.Sxe7?
      • threat
        • 2.Re6#
        • 2.Qe6#
      • 1...Rb5
        • 2.Qd4#
      • 1...Rb6
        • 2.Qd4#
        • 2.Qe6#
      • 1...d2
        • 2.Qe6#
      • 1...Ke3!
  • Keys
    • 1.Qc3!
      • threat
        • 2.f6#
      • 1...Rd4
        • 2.Qe1#
      • 1...Re5
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK::QAR(E),XR(d)
    • R(d);SBLOCK::QAR(E)
    • R(d);OGATE::B(F)+P(C),XR(d)
    • R(d);OGATE::PXR(d)=Q
  • Tries
    • Try
      • S(B);XR(d)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_GUARD::QAR1(E)
        • P(a);::QAR2(E)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • B(F)+P(C)
    • Vars
      • R(b);SBLOCK::QAR(E)
      • R(d);SBLOCK::QAR(E),XR(b)
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