MESON Chess Problem Database

Problem Display
PID: 121336 (4b3/4N1K1/1pn5/4k1N1/3R4/4b3/1Q6/8 w - - 0 1)

Bodde, OC

Nordiske Skaktidende, 1880

4b3/4N1K1/1pn5/4k1N1/3R4/4b3/1Q6/8

#2

5 + 5

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Qh2#
    • 1...Bf4
      • 2.Rd5#
  • Tries
    • 1.Sxc6+?
      • 1...Kf5
        • 2.Qb5#
      • 1...Bxc6!
    • 1.Qh2+?
      • 1...Bf4
        • 2.Rd5#
        • 2.Qxf4#
      • 1...Kxd4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qe4#
      • 1...Kxd4
        • 2.Sf3#
      • 1...Bxd4
        • 2.Qh2#
      • 1...Sxd4
        • 2.Qc7#
      • 1...Bg6
        • 2.Sxc6#

This anticipates 103198(1894)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD,P_SPINB(a),SBLOCK,XR(B)::QAB(A)
    • B(a);SBLOCK::QAB(A)+R(B),DCHECK
  • Tries
    • Try
      • S(D);CHECK,XS(d)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
      • Refutation
        • B(e);XS(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);S_FLIGHT,XR(B)::S(C)
      • B(a);N_GUARD,SBLOCK,XR(B)::QAB(A)
      • S(d);OGATE,SBLOCK,XR(B)::QAB(A)
      • B(e);N_GUARD::S(D),XS(d)
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