MESON Chess Problem Database

Problem Display
PID: 219867 (5B2/Rp1bQ3/1q6/n2k1P2/BRr5/1PP5/K1N5/8 w - - 0 1)

Wester, Anders Emil

Land og Folk, 1970

(First published on Sun Feb 8 1970)

5B2/Rp1bQ3/1q6/n2k1P2/BRr5/1PP5/K1N5/8

#2

10 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qc7
      • 2.Se3#
    • 1...Qd8
      • 2.Se3#
    • 1...Qxb4
      • 2.Se3#
    • 1...Qa6
      • 2.Se3#
    • 1...Qc6
      • 2.Se3#
    • 1...Qf6
      • 2.Se3#
    • 1...Qg6
      • 2.Se3#
    • 1...Rxc3
      • 2.Qe4#
    • 1...Rd4
      • 2.Se3#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rc5
      • 2.Se3#
      • 2.Rd4#
      • 2.Qe4#
    • 1...Rc6
      • 2.Qe4#
    • 1...Rc7
      • 2.Qe4#
    • 1...Rc8
      • 2.Qe4#
    • 1...Bc6
      • 2.Qe6#
    • 1...Sc6
      • 2.bxc4#
  • Keys
    • 1.Bc6+!
      • 1...Kxc6
        • 2.Qd6#
      • 1...Qxc6
        • 2.Se3#
      • 1...Rxc6
        • 2.Qe4#
      • 1...Bxc6
        • 2.Qe6#
      • 1...Sxc6
        • 2.bxc4#
      • 1...bxc6
        • 2.Rxd7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 12
  • Sets
    • Q(d);N_GUARD::S(B),XQ(d)
    • Q(d);N_GUARD::S(B)
    • Q(d);N_GUARD,XR(F)::S(B)
    • R(a);N_GUARD,XP(D)::QAB1(I)
    • R(a);S_CUTQ(d)::S(B)
    • R(a);N_GUARD::QAB1(I),XR(a)
    • R(a);N_GUARD::QAB1(I)
    • B(f);N_GUARD,S_CUTQ(d)::QAB1(I)
    • S(b);N_GUARD::P(C),XR(a)
  • Actual
    • B(E);CHECK
    • Vars
      • K(c);S_FLIGHT,XB(E)::QAR1(I)
      • Q(d);SBLOCK,XB(E)::S(B)
      • R(a);SBLOCK,XB(E)::QAB1(I)
      • B(f);XB(E)::QAB1(I)
      • S(b);SBLOCK,XB(E)::P(C),XR(a)
      • P(e);OGATE,SBLOCK,XB(E)::R(H),XB(f)
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