MESON Chess Problem Database

Problem Display
PID: 74813 (2n1r3/1p5P/3pkPQK/1qP1N3/3R4/3pR3/8/8 w - - 0 1)

Rothwell, Stephen

Der Tagesspiegel (Berlin), 1994

2n1r3/1p5P/3pkPQK/1qP1N3/3R4/3pR3/8/8

#2

8 + 7

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Sxd3#
      • 2.Sf3#
      • 2.Sc4#
      • 2.Sg4#
      • 2.Sc6#
      • 2.Sf7#
    • 1...Re7
      • 2.f7#
    • 1...Rg8
      • 2.hxg8Q#
      • 2.hxg8B#
    • 1...Sb6
      • 2.Rxd6#
    • 1...Sa7
      • 2.Rxd6#
    • 1...Se7
      • 2.Rxd6#
    • 1...dxc5
      • 2.Sxd3#
      • 2.Sf3#
      • 2.Sc4#
      • 2.Sg4#
      • 2.Sc6#
      • 2.Sd7#
      • 2.Sf7#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Qf5#
        • 2.Qf7#
      • 1...Qd7
        • 2.Sxd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sf7#
        • 2.Qf5#
      • 1...Re7
        • 2.Qf5#
        • 2.f7#
      • 1...Rf8
        • 2.Qf5#
      • 1...Rg8
        • 2.Qxg8#
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Se7
        • 2.Rxd6#
        • 2.Qf7#
      • 1...dxe5!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Qg4#
      • 1...Qd7+
        • 2.Sf7#
      • 1...Re7+
        • 2.f7#
      • 1...Rg8+
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Se7
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(g);SBLOCK::QAR(F)+P(E)
    • R(g);OGATE::PXR(g)=Q
    • S(f);N_GUARD::R1(B),XP(c)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • R(g);::QAB1(F)
      • Refutation
        • P(c);P_SPINP(c),XS(D)
  • Actual
    • K(G);S_FLIGHT
    • Threat
      • QAB(F)
    • Vars
      • Q(b);CHECK,SBLOCK::R(A)+S(D)
      • R(g);CHECK,SBLOCK::QAR(F)+P(E)
      • R(g);CHECK,OGATE::PXR(g)=Q
      • S(f);N_GUARD::R1(B),XP(c)
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