MESON Chess Problem Database

Problem Display
PID: 201419 (BQ2n3/8/N5p1/3P2B1/p2kN2K/3P4/1p1R4/1q1b4 w - - 0 1)

Feigl, Maximilian

2nd Prize, Kagans Neueste Schachnachrichten, 1922

BQ2n3/8/N5p1/3P2B1/p2kN2K/3P4/1p1R4/1q1b4

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Qh8#
    • 1...Sc7
      • 2.Qh8#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Sb5#
      • 1...Kxc3
        • 2.Qb4#
      • 1...Sd6
        • 2.Qh8#
      • 1...Sc7
        • 2.Qh8#
      • 1...Qxd3!
    • 1.Bf4?
      • threat
        • 2.Qe5#
        • 2.Qa7#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Qxd3
        • 2.Qb4#
      • 1...Qa2
        • 2.Qe5#
        • 2.Qa7#
        • 2.Qb6#
      • 1...Qc2
        • 2.Qe5#
      • 1...Qc1
        • 2.Qe5#
      • 1...Bb3
        • 2.Qe5#
        • 2.Qa7#
        • 2.Qb6#
      • 1...Sd6
        • 2.Qa7#
        • 2.Qb6#
        • 2.Qh8#
      • 1...Sc7
        • 2.Qa7#
        • 2.Qb4#
        • 2.Qb6#
        • 2.Qh8#
      • 1...g5+!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sb5#
      • 1...Kc3
        • 2.Qb4#
      • 1...Ke5
        • 2.d4#
      • 1...Qxd3
        • 2.Qxb2#
      • 1...Sxd6
        • 2.Qh8#
      • 1...Sc7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(g);OGATE::QAB(I)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(e);S_FLIGHT,XS(C)::QAB1(I)
        • S(g);OGATE::QAB(I)
      • Refutation
        • Q(a);P_SPINQ(a),XP(B)
    • Try
      • B(F);
      • Threat
        • DUALS(4)
      • Vars
        • Q(a);P_SPINQ(a),XP(B)::QAR2(I)
        • Q(a);::QAB1(I)
      • Refutation
        • P(f);CHECK
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(e);S_FLIGHT::QAB1(I)
      • K(e);OGATE,S_FLIGHT::P(B)
      • Q(a);N_GUARD,P_SPINQ(a),XP(B)::QAB(I),XP(c)
      • S(g);OGATE,XS(C)::QAB(I)
      • S(g);OGATE::QAB(I)
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