MESON Chess Problem Database

Problem Display
PID: 152964 (3K4/1N4Q1/3R3p/2p1Pk1P/R2b4/3rrb2/3N4/1B6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Magyar Sakkszovetseg, 1949

3K4/1N4Q1/3R3p/2p1Pk1P/R2b4/3rrb2/3N4/1B6

#2

9 + 7

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Rf6#
    • 1...Bg4
      • 2.Qf6#
    • 1...Ba1
      • 2.Qf6#
    • 1...Bb2
      • 2.Qf6#
    • 1...Bc3
      • 2.Qf6#
    • 1...Bxe5
      • 2.Qg6#
  • Tries
    • 1.Qg6+?
      • 1...Kxe5
        • 2.Qf6#
      • 1...Kf4!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Qf6#
      • 1...Ba1+
        • 2.Sd6#
      • 1...Bb2+
        • 2.Sd6#
      • 1...Bc3+
        • 2.Sd6#
      • 1...Bxe5+
        • 2.Qd7#
      • 1...Kf4
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);SBLOCK,XP(D)::R1(F)
    • B(c);SBLOCK::QAR1(H)
    • B(d);P_PINR(F)::QAR1(H)
    • B(d);P_PINR(F),SBLOCK,XP(D)::QAB1(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);N_SPINR(a),P-FLIGHT,XP(D)::QAB1(H)
      • Refutation
        • K(f);N_SPINR(a),P-FLIGHT,P_SPINB(d)
  • Actual
    • R(F);
    • Threat
      • QAR1(H)
    • Vars
      • B(d);CHECK::S(G)
      • B(d);CHECK,SBLOCK,XP(D)::QAB(H)
      • K(f);N_SPINR(a),P-FLIGHT,P_SPINB(d)::QAR2(H)
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