MESON Chess Problem Database

Problem Display
PID: 21963 (4RQ2/8/4bB2/4N3/3k4/2N5/1P4n1/6K1 w - - 0 1)

Schweig, Dr. Geza

Magyar Sakkvilag, 1922

4RQ2/8/4bB2/4N3/3k4/2N5/1P4n1/6K1

#2

7 + 3

3310 2345 Chess Problems 1997
3713 Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4+?
      • 1...Bc4
        • 2.Qb6#
      • 1...Ke3!
    • 1.Qd6+?
      • 1...Bd5
        • 2.Qb6#
      • 1...Ke3!
  • Keys
    • 1.Be7!
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Ba2
        • 2.Bc5#
      • 1...Bb3
        • 2.Bc5#
      • 1...Bh3
        • 2.Bc5#
      • 1...Bc4
        • 2.Bc5#
      • 1...Bg4
        • 2.Bc5#
      • 1...Bd5
        • 2.Bc5#
      • 1...Bf5
        • 2.Bc5#
      • 1...Bd7
        • 2.Bc5#
      • 1...Bf7
        • 2.Bc5#
      • 1...Bc8
        • 2.Bc5#
      • 1...Bg8
        • 2.Bc5#
      • 1...Se1
        • 2.Qf4#
      • 1...Se3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sh4
        • 2.Qf4#

This anticipates 162969(2012)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 17
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • B(c);P_SPINB(c)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • B(c);P_SPINB(c)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(E);
    • Vars
      • K(b);S_FLIGHT::QAB1(G)
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(G)
      • B(c);::B(E)
      • S(a);N_GUARD::QAR2(G)
      • S(a);N_GUARD::QAR2(G),XS(a)
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