MESON Chess Problem Database

Problem Display
PID: 106256 (4R2B/6RB/2pQ4/K2pbbpq/2pk2r1/6p1/3P4/4N3 w - - 0 1)

Nemeth, Jozsef

Karacsonyi lap, 1967

4R2B/6RB/2pQ4/K2pbbpq/2pk2r1/6p1/3P4/4N3

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxe5#
    • 1...Bxg7
      • 2.Bxg7#
    • 1...Bb1
      • 2.Sf3#
    • 1...Bc2
      • 2.Sxc2#
      • 2.Sf3#
    • 1...Bd3
      • 2.Sf3#
    • 1...Be6
      • 2.Sc2#
      • 2.Sf3#
    • 1...Bd7
      • 2.Sc2#
      • 2.Sf3#
    • 1...Bc8
      • 2.Sc2#
      • 2.Sf3#
    • 1...c3
      • 2.Qb4#
    • 1...c5
      • 2.Qxe5#
  • Tries
    • 1.Qc5+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kxc5!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qe3#
      • 1...Bc7+
        • 2.Rxc7#
      • 1...Ke4
        • 2.Qe3#
      • 1...c3
        • 2.Qb4#
      • 1...Re4
        • 2.Sc2#
      • 1...Bf4
        • 2.Sf3#
      • 1...Bd3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(c);N_SPINP(e),P-FLIGHT,P_SPINB(f)::QAR1(D),XB(f)
    • B(f);OGATE,P_SPINB(f),XR(E)::B(H),XB(f)
    • B(g);::S(A)
    • P(b);OGATEB::QAR2(D)
    • P(j);SBLOCK::QAB1(D),XB(f)
  • Tries
    • Try
      • Q(D);CHECK,N_PINP(e)
      • Vars
        • K(c);OGATE,P-FLIGHT,P_SPINB(f)::QAR1(D)
      • Refutation
        • K(c);S_FLIGHT,XQ(D)
  • Actual
    • Q(D);N_PINP(e)
    • Threat
      • QAB1(D)
    • Vars
      • B(f);CHECK,OGATEB::B(H)+R(E),XB(f)
      • K(c);P-FLIGHT,P_SPINB(f)::QAR1(D)
      • P(b);OGATEB::QAR2(D)
      • R(d);SBLOCK,S_CUTB(g)::S(A)
      • B(f);::S(A)
      • B(g);::S(A)
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