MESON Chess Problem Database

Problem Display
PID: 193830 (b7/3N4/kBp5/1R5Q/8/K7/8/8 w - - 0 1)

Barry, Henry William

Chess News, 1916

b7/3N4/kBp5/1R5Q/8/K7/8/8

#2

5 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Sb8#
      • 2.Ra5#
  • Tries
    • 1.Rb1?
      • threat
        • 2.Sc5#
      • 1...c5
        • 2.Sxc5#
      • 1...Kb7!
    • 1.Rb2?
      • threat
        • 2.Sc5#
      • 1...c5
        • 2.Sxc5#
      • 1...Kb7!
    • 1.Rb3?
      • threat
        • 2.Sc5#
      • 1...c5
        • 2.Sxc5#
      • 1...Kb7!
    • 1.Rb4?
      • threat
        • 2.Sc5#
      • 1...c5
        • 2.Sxc5#
      • 1...Kb7!
    • 1.Rc5?
      • 1...Bb7
        • 2.Ra5#
        • 2.Qe2#
      • 1...Kb7!
    • 1.Qf3?
      • 1...Kxb5
        • 2.Qe2#
        • 2.Qf1#
        • 2.Qd3#
      • 1...cxb5
        • 2.Qxa8#
      • 1...Bb7
        • 2.Ra5#
      • 1...c5
        • 2.Ra5#
      • 1...Kb7!
    • 1.Qh1?
      • 1...Kxb5
        • 2.Qf1#
      • 1...cxb5
        • 2.Qxa8#
      • 1...Bb7
        • 2.Ra5#
      • 1...c5
        • 2.Ra5#
      • 1...Kb7!
  • Keys
    • 1.Qe8!
      • 1...Kxb5
        • 2.Qe2#
      • 1...Kb7
        • 2.Sc5#
      • 1...cxb5
        • 2.Qxa8#
      • 1...Bb7
        • 2.Ra5#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • S(E)
      • Vars
        • P(b);::S(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • S(E)
      • Vars
        • P(b);::S(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • S(E)
      • Vars
        • P(b);::S(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • S(E)
      • Vars
        • P(b);::S(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);OGATE,SBLOCK,XR(B)::QAR2(C),XB(c)
        • B(c);SBLOCK::R1(B)
        • P(b);::R1(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(B)::QAB(C)
        • P(b);OGATE,SBLOCK,XR(B)::QAR2(C),XB(c)
        • B(c);SBLOCK::R1(B)
        • P(b);::R1(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(B)::QAB(C)
      • K(a);S_FLIGHT::S(E)
      • P(b);SBLOCK,XR(B)::QAR2(C),XB(c)
      • B(c);SBLOCK::R1(B)
      • P(b);::S(E),XP(b)
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