MESON Chess Problem Database

Problem Display
PID: 265641 (4q3/8/2P2P2/N2kBP1p/p3N3/rnQ4K/8/4R3 w - - 0 1)

Maleika, Gerhard

Paslack, Rainer

Schweizerische Schachzeitung, 2016

4q3/8/2P2P2/N2kBP1p/p3N3/rnQ4K/8/4R3

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qc4#
  • Tries
    • 1.Bg3?
      • threat
        • 2.Qc4#
      • 1...Qxc6
        • 2.Qe5#
      • 1...Sxa5
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Qxe4!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qc4#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Sxa5
        • 2.Rd1#
      • 1...Sd2
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(f);SBLOCK,XB(F)::QAB1(B)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAB1(B)
      • Vars
        • Q(f);N_GUARD,XP(H)::QAR1(B)
        • S(b);N_GUARD,XS(E)::QAR1(B)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • Q(f);XS(D)
  • Actual
    • S(D);
    • Threat
      • QAB1(B)
    • Vars
      • Q(f);OGATE,XP(H)::QAB1(B),XQ(f)
      • Q(f);OGATE,XB(F)::QAR1(B),XQ(f)
      • S(b);N_GUARD,XS(E)::R(A)
      • S(b);N_GUARD::QAR1(B)
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