MESON Chess Problem Database

Problem Display
PID: 222579 (8/2p5/K1Nqn3/p1rN4/2kr1p2/B2p3B/P7/Q7 w - - 0 1)

Seguin, Andre W

New Orleans Times-Democrat, 1883

8/2p5/K1Nqn3/p1rN4/2kr1p2/B2p3B/P7/Q7

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qc1#
    • 1...Rdxd5
      • 2.Qc1#
    • 1...Rcxd5
      • 2.Qc1#
    • 1...Sg5
      • 2.Qxd4#
    • 1...Sg7
      • 2.Qxd4#
    • 1...Sd8
      • 2.Qxd4#
    • 1...Sf8
      • 2.Qxd4#
    • 1...f3
      • 2.Se3#
  • Keys
    • 1.Bxe6!
      • threat
        • 2.Se3#
        • 2.Sb6#
        • 2.Qc3#
        • 2.Qxd4#
        • 2.Qc1#
      • 1...Qxc6+
        • 2.Sb6#
      • 1...Rxc6+
        • 2.Sb6#
      • 1...Qxd5
        • 2.Se5#
        • 2.Qxd4#
        • 2.Qc1#
      • 1...Qxe6
        • 2.Qxd4#
      • 1...Rdxd5
        • 2.Qd4#
        • 2.Qc1#
      • 1...Rcxd5
        • 2.Qxd4#
        • 2.Qc1#
      • 1...d2
        • 2.Qc3#
        • 2.Qxd4#
      • 1...Qe5
        • 2.Se3#
        • 2.Sb6#
        • 2.Sxe5#
        • 2.Qc3#
        • 2.Qc1#
      • 1...Re4
        • 2.Se3#
        • 2.Sb6#
        • 2.Qc3#
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(g);N_PINS(G),SBLOCK,XS(E)::QAR(A)
    • R(c);SBLOCK,XS(E)::QAR(A)
    • R(f);SBLOCK,XS(E)::QAR(A)
    • S(h);N_GUARD::QAR1(A),XR(c)
    • P(d);N_GUARD::S(E)
  • Actual
    • B(D);XS(h)
    • Threat
      • DUALS(5)
    • Vars
      • Q(g);CHECK,XS(G)::B(D)+S(E),DCHECK
      • R(f);CHECK,XS(G)::B(D)+S(E),DCHECK
      • Q(g);XB(D)::QAR1(A),XR(c)
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