MESON Chess Problem Database

Problem Display
PID: 157437 (8/5N2/7p/2KPR1Pr/5k1n/4p1pP/4pr2/4N1Q1 w - - 0 1)

Butler, Henry William

Brighton Guardian, 0000

8/5N2/7p/2KPR1Pr/5k1n/4p1pP/4pr2/4N1Q1

#2

8 + 8

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qxe3#
    • 1...Rg2
      • 2.Qxe3#
    • 1...Rh2
      • 2.Qxe3#
    • 1...Rf3
      • 2.Sd3#
    • 1...Sf3
      • 2.Sd3#
    • 1...g2
      • 2.Qh2#
  • Tries
    • 1.Sg2+?
      • 1...Kf3
        • 2.Rxe3#
      • 1...Rxg2
        • 2.Qxe3#
      • 1...Sxg2!
  • Keys
    • 1.Sd6!
      • 1...Kxe5
        • 2.Sd3#
      • 1...Rxg5
        • 2.Re4#
      • 1...hxg5
        • 2.Re4#
      • 1...Sf5
        • 2.Rxf5#
      • 1...g2
        • 2.Qh2#
      • 1...Rf1
        • 2.Qxe3#
      • 1...Rg2
        • 2.Qxe3#
      • 1...Rh2
        • 2.Qxe3#
      • 1...Rf3
        • 2.Sd3#
      • 1...Sg2
        • 2.Rf5#
      • 1...Sf3
        • 2.Sd3#
        • 2.Rf5#
      • 1...Sg6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE::QAB1(B),XP(c)
    • R(b);SBLOCK::S(A)
    • S(f);SBLOCK::S(A)
    • P(d);OGATEB::QAB(B)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(e);P-FLIGHT::R1(F),XP(c)
        • R(b);OGATE,XS(A)::QAB1(B),XP(c)
      • Refutation
        • S(f);XS(A)
  • Actual
    • S(H);
    • Vars
      • K(e);S_FLIGHT,XR(F)::S(A)
      • R(g);SBLOCK,XP(G)::R1(F)
      • P(h);SBLOCK,XP(G)::R1(F)
      • S(f);N_GUARD::R1(F),XS(f)
      • P(d);OGATEB::QAB(B)
      • R(b);OGATE::QAB1(B),XP(c)
      • R(b);SBLOCK::S(A)
      • S(f);N_GUARD::R1(F)
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