MESON Chess Problem Database

Problem Display
PID: 2401 (8/R6B/2QPn1n1/2p1N3/3k2P1/6K1/3BP3/8 w - - 0 1)

Henderson, John

Source?, 0000

8/R6B/2QPn1n1/2p1N3/3k2P1/6K1/3BP3/8

#2

9 + 4

4774 Canadian Chess Problems 1890

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qe4#
    • 1...Sh4
      • 2.Qe4#
    • 1...Sxe5
      • 2.Qe4#
    • 1...Se7
      • 2.Qe4#
    • 1...Sf8
      • 2.Qe4#
    • 1...Sh8
      • 2.Qe4#
    • 1...c4
      • 2.Sf3#
  • Tries
    • 1.Bc3+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxc3!
    • 1.Ra4+?
      • 1...c4
        • 2.Sf3#
      • 1...Kxe5!
  • Keys
    • 1.Re7!
      • 1...Kxe5
        • 2.Bc3#
      • 1...Sxe5
        • 2.Qe4#
      • 1...Sxe7
        • 2.Qe4#
      • 1...Sef4
        • 2.e3#
      • 1...Sg5
        • 2.e3#
      • 1...Sc7
        • 2.e3#
      • 1...Sg7
        • 2.e3#
      • 1...Sd8
        • 2.e3#
      • 1...Sef8
        • 2.e3#
      • 1...Sgf4
        • 2.Qe4#
      • 1...Sh4
        • 2.Qe4#
      • 1...Sgf8
        • 2.Qe4#
      • 1...Sh8
        • 2.Qe4#
      • 1...c4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(d);::QAR1(F)
    • S(d);XS(E)::QAR1(F)
    • P(b);::S(E)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XB(A)
    • Try
      • R(H);CHECK
      • Vars
        • P(b);P_SPINP(b)::S(E)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
  • Actual
    • R(H);
    • Vars
      • K(a);P_SPINS(c),S_FLIGHT,XS(E)::B(A)
      • S(d);XS(E)::QAR1(F)
      • S(d);XR(H)::QAR1(F)
      • S(c);::P(B)
      • S(d);::QAR1(F)
      • P(b);::S(E)
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