MESON Chess Problem Database

Problem Display
PID: 203488 (8/1n6/5K2/3pQN2/BPk1b3/3N4/8/b3B3 w - - 0 1)

Takats, Sandor

Comm., Uj Nemezdek, 1924

8/1n6/5K2/3pQN2/BPk1b3/3N4/8/b3B3

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Sxb2#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bxe5+
      • 2.Sxe5#
    • 1...Bxd3
      • 2.Se3#
    • 1...d4
      • 2.Qb5#
  • Tries
    • 1.Qxa1?
      • threat
        • 2.Sb2#
        • 2.Se5#
        • 2.Qc3#
        • 2.Qd4#
      • 1...Bxd3
        • 2.Se3#
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qa2#
      • 1...Bxf5
        • 2.Se5#
        • 2.Qc3#
      • 1...d4
        • 2.Qxd4#
      • 1...Kxd3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Se5#
      • 1...Bxb2+
        • 2.Sxb2#
      • 1...Kxd3
        • 2.Bb5#
      • 1...Bxd3
        • 2.Se3#
      • 1...d4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::S(B),XB(a)
    • B(a);N_GUARD::QAR1(E),XB(a)
    • B(a);CHECK,XQ(E)::S(B),XB(a)
    • B(c);SBLOCK,XS(B)::S(F)
    • P(d);N_PINQ(E)::QAB1(E)
  • Tries
    • Try
      • Q(E);N_SPINQ(E),XB(a)
      • Threat
        • DUALS(4)
      • Vars
        • P(d);::QAR1(E),XP(d)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
  • Actual
    • Q(E);
    • Threat
      • S(B)
    • Vars
      • B(a);CHECK,XQ(E)::S(B),XB(a)
      • K(b);S_FLIGHT,XS(B)::B(C)
      • B(c);SBLOCK,XS(B)::S(F)
      • P(d);N_PINQ(E)::QAB1(E)
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