MESON Chess Problem Database

Problem Display
PID: 133480 (3Nn1b1/3r1Q2/1R2PP2/2nkN3/2p2P2/B1ppKP2/8/8 w - - 0 1)

Paslack, Rainer

The Problemist Supplement, 2009

3Nn1b1/3r1Q2/1R2PP2/2nkN3/2p2P2/B1ppKP2/8/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.fxe4#
    • 1...Sxe6
      • 2.Rb5#
  • Tries
    • 1.Qxd7+?
      • 1...Sd6
        • 2.Rxd6#
        • 2.Qc6#
        • 2.Qxd6#
      • 1...Sxd7!
    • 1.exd7+?
      • 1...Se6
        • 2.Rb5#
      • 1...Bxf7!
    • 1.e7+?
      • 1...Se6
        • 2.Rb5#
      • 1...Bxf7!
  • Keys
    • 1.Sec6!
      • threat
        • 2.Sb4#
      • 1...Kd6
        • 2.Qxd7#
      • 1...Sxe6
        • 2.Rb5#
      • 1...Sb3
        • 2.Qh5#
      • 1...Sa4
        • 2.Qh5#
      • 1...Se4
        • 2.fxe4#
      • 1...Sa6
        • 2.Qh5#
      • 1...Sb7
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(d);OGATE::P(C),XS(d)
    • S(d);OGATEB,P_SPINS(d),XP(G)::R(F)
  • Tries
    • Try
      • Q(I);CHECK,XR(f)
      • Refutation
        • S(d);XQ(I)
    • Try
      • P(G);CHECK,XR(f)
      • Vars
        • S(d);P_SPINS(d),S_CUTB(h)::R(F)
      • Refutation
        • B(h);XQ(I)
    • Try
      • P(G);CHECK
      • Vars
        • S(d);P_SPINS(d),S_CUTB(h)::R(F)
      • Refutation
        • B(h);XQ(I)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(e);P-FLIGHT,P_SPINS(d)::QAR1(I),XR(f)
      • S(d);OGATEB,P_SPINS(d),XP(G)::R(F)
      • S(d);::QAR(I)
      • S(d);OGATE::P(C),XS(d)
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