MESON Chess Problem Database

Problem Display
PID: 146931 (2B5/4pp2/1BKp1kpP/2N3p1/1p4P1/r1q5/pQ2R3/8 w - - 0 1)

Apro, Laszlo

La Settimana Enigmistica, 1933

(First published on Fri Jan 6 1933)

2B5/4pp2/1BKp1kpP/2N3p1/1p4P1/r1q5/pQ2R3/8

#2

8 + 10

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb2
      • 2.Sd7#
    • 1...Qd4
      • 2.Sd7#
    • 1...Qe5
      • 2.Se4#
    • 1...e5
      • 2.Bd8#
    • 1...e6
      • 2.Bd8#
  • Tries
    • 1.Qxc3+?
      • 1...bxc3
        • 2.Sd7#
      • 1...e5
        • 2.Bd8#
      • 1...Rxc3!
  • Keys
    • 1.Re3!
      • threat
        • 2.Qf2#
      • 1...Qxb2
        • 2.Sd7#
      • 1...e5
        • 2.Bd8#
      • 1...e6
        • 2.Bd8#
      • 1...Qd4
        • 2.Sd7#
      • 1...Qe5
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_PINS(D),N_SPINQ(c),XQ(A)::S(D)
    • Q(c);N_PINS(D)::S(D)
    • P(i);N_SPINQ(c),OGATEB::B(E)
    • P(i);OGATEB::B(E)
  • Tries
    • Try
      • Q(A);CHECK,N_SPINS(D),XQ(c)
      • Vars
        • P(d);XQ(A)::S(D)
        • P(i);P_SPINP(i),S_CUTP(d),S_CUTR(b)::B(E)
      • Refutation
        • R(b);P_PINS(D),XQ(A)
  • Actual
    • R(B);
    • Threat
      • QAR(A)
    • Vars
      • Q(c);N_PINS(D),N_SPINQ(c),XQ(A)::S(D)
      • P(i);N_SPINQ(c),OGATEB::B(E)
      • P(i);OGATEB::B(E)
      • Q(c);N_PINS(D)::S(D)
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