MESON Chess Problem Database

Problem Display
PID: 193449 (Q7/3B4/2N5/4p3/1p1p4/nn1k2P1/3N1P2/3K4 w - - 0 1)

Borg, Otto

Pesti Naplo, 1914

Q7/3B4/2N5/4p3/1p1p4/nn1k2P1/3N1P2/3K4

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qxa3?
      • threat
        • 2.Qxb3#
      • 1...Kc3
        • 2.Qxb3#
      • 1...bxa3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sxe5#
      • 1...Kc4
        • 2.Sxe5#
      • 1...Kxe4
        • 2.Sxb4#
      • 1...Sc4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);P_PINS(b),XS(a)
      • Threat
        • QAR2(G),XS(b)
      • Vars
        • K(c);P-FLIGHT::QAR1(G),XS(b)
      • Refutation
        • P(d);N_SPINS(b),XQ(G)
  • Actual
    • S(B);
    • Threat
      • S(E),XP(f)
    • Vars
      • K(c);S_FLIGHT::S(E),XP(f)
      • K(c);S_FLIGHT,XS(B)::QAB(G)+S(E),XP(d)
      • S(a);SBLOCK::S(E),XP(d)
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