MESON Chess Problem Database

Problem Display
PID: 6594 (8/4R3/8/2N5/8/8/4pk1p/1Q3BbK w - - 0 1)

Larsen, Karl Adolf Koefoed

Aarsskrift for DSK, 1932

8/4R3/8/2N5/8/8/4pk1p/1Q3BbK

#2

5 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Bg2?
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Kg3!
    • 1.Rf7+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Kg3!
  • Keys
    • 1.Qd3!
      • 1...Ke1
        • 2.Qxe2#
      • 1...Kxf1
        • 2.Qxe2#
      • 1...exf1Q
        • 2.Qe3#
      • 1...exf1S
        • 2.Re2#
      • 1...exf1B
        • 2.Qe3#
      • 1...exf1R
        • 2.Re2#
        • 2.Qe3#
      • 1...e1Q
        • 2.Rf7#
      • 1...e1S
        • 2.Se4#
      • 1...e1B
        • 2.Se4#
        • 2.Rf7#
      • 1...e1R
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • P(b);::QAB1(A),XQ(b)
        • P(b);::QAB1(A),XS(b)
        • P(b);::QAB1(A),XB(b)
        • P(b);::QAB1(A),XR(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
      • K(c);P-FLIGHT,P_SPINP(b),XB(B)::QAB1(A),XP(b)
      • P(b);SBLOCK,XB(B)::QAB1(A)
      • P(b);SBLOCK,XB(B)::R1(E)
      • P(b);SBLOCK::R(E)
      • P(b);SBLOCK::S(D)
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