MESON Chess Problem Database

Problem Display
PID: 144137 (5K2/B4N2/3nB3/QbN5/3k1p2/3p4/2q2P2/8 w - - 0 1)

Rduch, Frantisek

3rd Prize, Braunauer Chess Club, 1925

5K2/B4N2/3nB3/QbN5/3k1p2/3p4/2q2P2/8

#2

7 + 6

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Sb3#
  • Tries
    • 1.Sd7+?
      • 1...Ke4
        • 2.Sg5#
      • 1...Qc5!
    • 1.Qe1?
      • threat
        • 2.Sb3#
        • 2.Qe5#
      • 1...Qxc5
        • 2.Qe5#
      • 1...Sxf7
        • 2.Sb3#
      • 1...Qd2
        • 2.Sa4#
        • 2.Se4#
        • 2.Qe5#
      • 1...d2
        • 2.Qe5#
      • 1...Qb3
        • 2.Sxb3#
        • 2.Sa4#
        • 2.Se4#
        • 2.Sa6#
        • 2.Sb7#
        • 2.Sd7#
        • 2.Qe5#
      • 1...Sc4
        • 2.Sb3#
      • 1...Se4
        • 2.Sb3#
      • 1...Qe2!
    • 1.Qa1+?
      • 1...Qb2
        • 2.Qxb2#
      • 1...Qc3!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sf3#
      • 1...Ke5
        • 2.Sd7#
      • 1...Qxf2
        • 2.Sd7#
      • 1...Qxc5
        • 2.Qa1#
      • 1...Qd1
        • 2.Sd7#
      • 1...Qe2
        • 2.Sd7#
      • 1...Bc6
        • 2.Sb3#
      • 1...f3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • S(f);SBLOCK::B(E)+S(C),DCHECK
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::S(F)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);P_SPINQ(a),XS(C)::QAB1(B)
        • S(f);XS(F)::B(E)+S(C),DCHECK
        • P(b);::QAB1(B)
        • S(f);::B(E)+S(C),DCHECK
      • Refutation
        • Q(a);
    • Try
      • Q(B);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAB(B),XQ(a)
      • Refutation
        • Q(a);P_SPINQ(a)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(c);S_FLIGHT::S(C)
      • Q(a);N_GUARD,XP(A)::B(E)+S(C)
      • Q(a);N_GUARD,P_SPINQ(a),XS(C)::QAB(B)
      • Q(a);N_GUARD::B(E)+S(C)
      • B(e);::B(E)+S(C),DCHECK
      • P(d);::S(F),XP(d)
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