MESON Chess Problem Database

Problem Display
PID: 189445 (1Q6/8/5N2/3Nnkr1/8/2BR4/K3P3/8 w - - 0 1)

Weyl, Paul

Deutsche Arbeiter Schachzeitung, 1911

1Q6/8/5N2/3Nnkr1/8/2BR4/K3P3/8

#2

7 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Qxe5#
    • 1...Sg6
      • 2.Qc8#
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qxe5#
      • 1...Kxf4
        • 2.Rf3#
      • 1...Kxf6
        • 2.Qf8#
      • 1...Sxd3
        • 2.e4#
      • 1...Sf3
        • 2.e4#
      • 1...Sc4
        • 2.e4#
      • 1...Sg4
        • 2.e4#
      • 1...Sc6
        • 2.e4#
      • 1...Sg6
        • 2.e4#
      • 1...Sd7
        • 2.e4#
      • 1...Sf7
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(c);SBLOCK::QAR1(G),XS(a)
    • S(a);N_GUARD,SBLOCK::QAB(G)
  • Actual
    • S(E);
    • Threat
      • QAR1(G),XS(a)
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINS(a),XS(E)::R1(D)
      • K(b);OGATEB,P-FLIGHT,P_SPINS(a),XS(F)::QAR2(G)
      • S(a);XR(D)::P(B)
      • S(a);::P(B)
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