MESON Chess Problem Database

Problem Display
PID: 11430 (2q5/r7/bQN1R3/rn1k1pN1/8/pP1PP3/2K2n2/4bB2 w - - 0 1)

Larsen, Karl Adolf Koefoed

Skakbladet, 1938

2q5/r7/bQN1R3/rn1k1pN1/8/pP1PP3/2K2n2/4bB2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6+
      • 2.Qxc6#
    • 1...Sd1
      • 2.Bg2#
    • 1...Sh1
      • 2.Bg2#
    • 1...Sxd3
      • 2.Bg2#
    • 1...Sh3
      • 2.Bg2#
    • 1...Sg4
      • 2.Bg2#
    • 1...Sc3
      • 2.Sb4#
      • 2.Qd4#
    • 1...Sd4+
      • 2.Qxd4#
    • 1...Sd6
      • 2.Re5#
    • 1...Sc7
      • 2.Se7#
      • 2.Qd4#
  • Keys
    • 1.d4!
      • threat
        • 2.Bc4#
        • 2.Qc5#
      • 1...Qxc6+
        • 2.Qxc6#
      • 1...Sxd4+
        • 2.Qxd4#
      • 1...Qxe6
        • 2.Qc5#
      • 1...Qf8
        • 2.Bc4#
      • 1...Ra4
        • 2.Qc5#
      • 1...Bb4
        • 2.Bc4#
      • 1...Sd3
        • 2.Bg2#
      • 1...Se4
        • 2.Bc4#
      • 1...Sc3
        • 2.Sb4#
      • 1...Sd6
        • 2.Re5#
      • 1...Sc7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • Q(j);CHECK,OGATE,XS(H)::QAB1(G),XQ(j)
    • S(b);N_GUARD::B(A)
    • S(b);N_GUARD,XP(D)::B(A)
    • S(e);CHECK,N_GUARD::QAR1(G),XS(e)
    • S(e);SBLOCK::R1(I)
  • Actual
    • P(D);
    • Threat
      • DUALS(2)
    • Vars
      • Q(j);CHECK,OGATE,XS(H)::QAB1(G),XQ(j)
      • S(e);CHECK,OGATE,XP(D)::QAR1(G),XS(e)
      • Q(j);N_PINS(H),XR(I)::QAR1(G)
      • Q(j);N_PINS(H)::B(A)
      • R(d);::QAR1(G)
      • B(a);::B(A)
      • S(b);N_GUARD::B(A)
      • S(b);::B(A)
      • S(e);N_PINS(H)::S(H)
      • S(e);SBLOCK::R1(I)
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Developed and maintained by Brian Stephenson.
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