MESON Chess Problem Database

Problem Display
PID: 223256 (5RN1/2B5/3r1P2/4P3/2PNk3/1R6/1KnQ4/8 w - - 0 1)

Bristow, Henry

English Mechanic and World of Science, 1885

(First published on Fri Jul 24 1885)

5RN1/2B5/3r1P2/4P3/2PNk3/1R6/1KnQ4/8

#2

10 + 3

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Re8#
    • 1...Rxf6
      • 2.Sxf6#
    • 1...Sa1
      • 2.Qe3#
    • 1...Se1
      • 2.Qe3#
    • 1...Sa3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sb4
      • 2.Qe3#
  • Tries
    • 1.Kxc2?
      • threat
        • 2.Qe3#
      • 1...Kxe5
        • 2.Re8#
        • 2.Qe3#
      • 1...Rxd4!
    • 1.Bxd6?
      • 1...Se3
        • 2.Qxe3#
      • 1...Sa1
        • 2.Qe3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sa3
        • 2.Qe3#
      • 1...Sb4
        • 2.Qe3#
      • 1...Sxd4!
    • 1.Rf3?
      • threat
        • 2.Qf4#
      • 1...Kxe5
        • 2.Re8#
        • 2.Qf4#
      • 1...Rxf6
        • 2.Sxf6#
        • 2.Qd3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Rb6+!
    • 1.Qd3+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxe5!
    • 1.exd6?
      • threat
        • 2.Re8#
      • 1...Ke5
        • 2.Re8#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sxd4!
  • Keys
    • 1.Qf2!
      • 1...Kxe5
        • 2.Re8#
      • 1...Rxd4
        • 2.Qf3#
      • 1...Rxf6
        • 2.Sxf6#
      • 1...Sxd4
        • 2.Re3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Rd5
        • 2.Qh4#
      • 1...Ra6
        • 2.Qh4#
      • 1...Rb6
        • 2.Qh4#
      • 1...Rc6
        • 2.Qh4#
      • 1...Re6
        • 2.Qh4#
      • 1...Rd7
        • 2.Qh4#
      • 1...Rd8
        • 2.Qh4#
      • 1...Sa1
        • 2.Qe3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sa3
        • 2.Qe3#
      • 1...Sb4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,P_SPINR(c),XP(F)::R(I)
    • R(c);XP(G)::S(J),XR(c)
    • S(a);N_GUARD::QAR1(B)
    • S(a);N_GUARD::QAR1(B),XS(a)
  • Tries
    • Try
      • K(A);P-FLIGHT,XS(a)
      • Threat
        • QAR1(B)
      • Refutation
        • R(c);XS(E)
    • Try
      • B(H);XR(c)
      • Vars
        • S(a);N_GUARD::QAR1(B),XS(a)
        • S(a);N_GUARD::QAR1(B)
      • Refutation
        • S(a);XS(E)
    • Try
      • R(C);
      • Threat
        • QAR1(B)
      • Vars
        • S(a);N_GUARD::QAR1(B),XS(a)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINR(c),XP(F)
    • Try
      • P(F);XR(c)
      • Threat
        • R(I)
      • Vars
        • K(b);P-FLIGHT::R(I)
        • S(a);N_GUARD::QAR1(B),XS(a)
      • Refutation
        • S(a);XS(E)
  • Actual
    • Q(B);
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINR(c),XP(F)::R(I)
      • R(c);SBLOCK,XS(E)::QAB1(B)
      • R(c);XP(G)::S(J),XR(c)
      • S(a);N_GUARD,SBLOCK,XS(E)::R1(C)
      • S(a);N_GUARD::QAR1(B),XS(a)
      • R(c);::QAR(B)
      • R(c);P_PINR(C)::QAR(B)
      • S(a);N_GUARD::QAR1(B)
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