MESON Chess Problem Database

Problem Display
PID: 198311 (2nQ3K/8/4pR2/2p1k3/R2b4/5B2/8/2N1nN2 w - - 0 1)

Mitchell, David Andrew

Mitchells Guide to the Game of Chess, 1920

2nQ3K/8/4pR2/2p1k3/R2b4/5B2/8/2N1nN2

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Re4#
    • 1...Bg1
      • 2.Re4#
    • 1...Bb2
      • 2.Re4#
    • 1...Bf2
      • 2.Re4#
    • 1...Bc3
      • 2.Re4#
    • 1...Be3
      • 2.Re4#
    • 1...Sc2
      • 2.Sd3#
    • 1...Sg2
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sc4#
        • 2.Sg4#
      • 1...Bxe3
        • 2.Re4#
      • 1...Se7
        • 2.Sg4#
      • 1...Sb6
        • 2.Sg4#
      • 1...Sd6
        • 2.Sg4#
      • 1...c4
        • 2.Sxc4#
        • 2.Sg4#
      • 1...Sxf3!
  • Keys
    • 1.Rf4!
      • 1...Kxf4+
        • 2.Qf6#
      • 1...Sxf3
        • 2.Sd3#
      • 1...Sb6
        • 2.Qc7#
        • 2.Qb8#
      • 1...Ba1
        • 2.Rae4#
      • 1...Bg1
        • 2.Rae4#
      • 1...Bb2
        • 2.Rae4#
      • 1...Bf2
        • 2.Rae4#
      • 1...Bc3
        • 2.Rae4#
      • 1...Be3
        • 2.Rae4#
      • 1...Sc2
        • 2.Sd3#
      • 1...Sg2
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sd6
        • 2.Qf6#
      • 1...Sa7
        • 2.Qc7#
        • 2.Qb8#
      • 1...Se7
        • 2.Qc7#
        • 2.Qb8#
      • 1...c4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(b);OGATE::R1(D)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);OGATE,XS(B)::R1(D)
        • S(f);::S(B)
      • Refutation
        • S(a);XB(C)
  • Actual
    • R(E);
    • Vars
      • K(d);CHECK,P_SPINB(b),S_FLIGHT,XR(E)::QAR2(F)
      • S(a);N_GUARD,XB(C)::S(A)
      • B(b);OGATE::R1(D)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
      • S(f);SBLOCK::QAB1(F)
      • P(c);N_GUARD::QAB1(F),XB(b)
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