MESON Chess Problem Database

Problem Display
PID: 112958 (8/3p4/Kp1p1pP1/1N1k1N2/3P2B1/3R2P1/P7/4B3 w - - 0 1)

McGregor, John NO

Toronto Globe, 1881

8/3p4/Kp1p1pP1/1N1k1N2/3P2B1/3R2P1/P7/4B3

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Se7#
    • 1...Ke6
      • 2.Sc7#
  • Tries
    • 1.Sc7+?
      • 1...Ke4
        • 2.Re3#
      • 1...Kc6
        • 2.Rc3#
      • 1...Kc4!
    • 1.Se3+?
      • 1...Kc6
        • 2.Rc3#
      • 1...Ke4!
    • 1.Sfxd6?
      • 1...Kc6
        • 2.Bf3#
      • 1...f5!
    • 1.Se7+?
      • 1...Ke4
        • 2.Bf5#
      • 1...Kc4!
    • 1.Rd2?
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.Se7#
      • 1...Ke6
        • 2.Sc7#
      • 1...Kc4!
    • 1.Ra3?
      • 1...Kc4
        • 2.Se3#
      • 1...Kc6
        • 2.Se7#
      • 1...Ke6
        • 2.Sc7#
      • 1...Ke4!
    • 1.Rb3?
      • 1...Kc4
        • 2.Se3#
      • 1...Kc6
        • 2.Se7#
      • 1...Ke6
        • 2.Sc7#
      • 1...Ke4!
    • 1.Rc3?
      • 1...Ke6
        • 2.Sc7#
      • 1...Ke4!
    • 1.Re3?
      • 1...Kc6
        • 2.Se7#
      • 1...Kc4!
    • 1.Rf3?
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.Se7#
      • 1...Ke6
        • 2.Sc7#
      • 1...Kc4!
  • Keys
    • 1.Rd1!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.Se7#
      • 1...Ke6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(H)
    • K(a);S_FLIGHT::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(C)
        • K(a);S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(H);CHECK
      • Vars
        • K(a);S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(H);XP(c)
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • P(d);
    • Try
      • S(H);CHECK
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::S(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::S(H)
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::S(H)
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::S(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::S(H)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);S_FLIGHT::S(H)
      • K(a);S_FLIGHT::S(G)
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