MESON Chess Problem Database

Problem Display
PID: 196846 (bB3R1K/3pk1Pn/q2N4/2r3p1/3N4/8/8/8 w - - 0 1)

Larsen, Karl Adolf Koefoed

Deutsche Schachzeitung, 1919

bB3R1K/3pk1Pn/q2N4/2r3p1/3N4/8/8/8

#2

6 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.S6f5#
    • 1...Rc2
      • 2.S6f5#
    • 1...Rc3
      • 2.S6f5#
    • 1...Rc4
      • 2.S6f5#
    • 1...Rf5
      • 2.S6xf5#
    • 1...Rc6
      • 2.S6f5#
    • 1...Rc7
      • 2.S6f5#
    • 1...Rc8
      • 2.S6f5#
    • 1...Bd5
      • 2.S6f5#
  • Keys
    • 1.Bc7!
      • threat
        • 2.Rf7#
      • 1...Qxd6
        • 2.Bd8#
      • 1...Rxc7
        • 2.S6f5#
      • 1...Sxf8
        • 2.g8S#
      • 1...Qf1
        • 2.Sc8#
      • 1...Qc4
        • 2.Sc8#
      • 1...Qc8
        • 2.Sxc8#
      • 1...Qa2
        • 2.Sc8#
      • 1...Rf5
        • 2.S6xf5#
      • 1...Bd5
        • 2.S6f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::S(B)
    • R(a);N_GUARD::S(B),XR(a)
    • R(a);N_GUARD,P_PINR(E)::S(B)
    • B(g);S_CUTR(a)::S(B)
  • Actual
    • B(D);
    • Threat
      • R1(E)
    • Vars
      • Q(c);SBLOCK,XS(B)::B(D)
      • R(a);N_GUARD,XB(D)::S(B)
      • S(f);SBLOCK,XR(E)::P=S
      • Q(c);N_GUARD::S(B)
      • Q(c);N_GUARD,P_PINR(E)::S(B),XQ(c)
      • R(a);N_GUARD::S(B),XR(a)
      • B(g);S_CUTR(a)::S(B)
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Developed and maintained by Brian Stephenson.
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