MESON Chess Problem Database

Problem Display
PID: 216192 (4b2N/5R2/1Rn1k2K/3qP3/8/3Pp3/B3Q3/8 w - - 0 1)

Collins, Francis Charles

A Collection of 107 Chess Problems, 1881

4b2N/5R2/1Rn1k2K/3qP3/8/3Pp3/B3Q3/8

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.d4?
      • threat
        • 2.Qg4#
      • 1...Qxa2
        • 2.Qxa2#
      • 1...Qb3
        • 2.Bxb3#
      • 1...Qc4
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Bxf7!
  • Keys
    • 1.Sg6!
      • 1...Kxf7
        • 2.Bxd5#
      • 1...Qxa2
        • 2.Qxa2#
      • 1...Bxf7
        • 2.Qg4#
      • 1...Qb3
        • 2.Bxb3#
      • 1...Qc4
        • 2.Bxc4#
      • 1...Bd7
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);
      • Threat
        • QAB(B)
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XB(A)::QAB(B),XQ(b)
        • Q(b);OGATEB::B(A),XQ(b)
      • Refutation
        • B(e);XR(G)
  • Actual
    • S(H);
    • Vars
      • K(d);N_SPINS(c),S_FLIGHT,XR(G)::B(A),XQ(b)
      • Q(b);N_SPINQ(b),OGATE,XB(A)::QAB(B),XQ(b)
      • B(e);SBLOCK,XR(G)::QAB(B)
      • Q(b);OGATEB::B(A),XQ(b)
      • B(e);SBLOCK::R1(G)
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Developed and maintained by Brian Stephenson.
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