MESON Chess Problem Database

Problem Display
PID: 189581 (8/2KN4/8/n2k4/P2p2B1/2P5/8/2Q5 w - - 0 1)

Hody, Janos

Pesti Naplo, 1911

8/2KN4/8/n2k4/P2p2B1/2P5/8/2Q5

#2

6 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qh1#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Be6#
        • 2.Qxd4#
        • 2.Qe6#
      • 1...Kc4
        • 2.Be6#
      • 1...dxc3
        • 2.Sb6#
        • 2.Be6#
        • 2.Qd3#
      • 1...Sb3
        • 2.Be6#
        • 2.Qe6#
      • 1...Sc6
        • 2.Be6#
        • 2.Qe6#
      • 1...d3
        • 2.Sb6#
        • 2.Be6#
        • 2.Qd4#
        • 2.Qxd3#
        • 2.Qe6#
      • 1...dxe3!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Sc5#
      • 1...Kc4!
    • 1.c4+?
      • 1...Sxc4
        • 2.Qh1#
      • 1...Ke4!
  • Keys
    • 1.Qc2!
      • 1...Kc4
        • 2.Be6#
      • 1...dxc3
        • 2.Qd3#
      • 1...d3
        • 2.Qxd3#
      • 1...Sb3
        • 2.c4#
      • 1...Sc4
        • 2.Qg2#
      • 1...Sc6
        • 2.c4#
      • 1...Sb7
        • 2.c4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • K(c);S_FLIGHT::B(D)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::S(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(B);CHECK
      • Vars
        • S(b);SBLOCK,XP(B)::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::B(D)
      • P(a);OGATEB,XP(B)::QAR2(A)
      • P(a);OGATEB::QAR2(A),XP(a)
      • S(b);N_GUARD::P(B)
      • S(b);SBLOCK::QAB(A)
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