MESON Chess Problem Database

Problem Display
PID: 214714 (8/2K3P1/3P4/1p6/1N1kp1Q1/1P1N2P1/4p3/4B3 w - - 0 1)

Pierce, William Timbrell

English Mechanic and World of Science, 1877

(First published on Fri Mar 30 1877)

8/2K3P1/3P4/1p6/1N1kp1Q1/1P1N2P1/4p3/4B3

#2

9 + 4

15239 Valois Notebooks 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc1?
      • 1...Ke3
        • 2.Sc2#
      • 1...Ke5
        • 2.Bc3#
      • 1...Kc5!
    • 1.Sb2?
      • 1...Ke3
        • 2.Sc2#
      • 1...Ke5
        • 2.Bc3#
      • 1...Kc5!
    • 1.Sf2?
      • 1...Ke3
        • 2.Sc2#
        • 2.Qxe4#
      • 1...Ke5
        • 2.Bc3#
      • 1...Kc5!
    • 1.Sc5?
      • 1...Ke3
        • 2.Sc2#
        • 2.Qxe4#
      • 1...Ke5
        • 2.Bc3#
      • 1...Kxc5!
    • 1.Se5?
      • 1...Ke3
        • 2.Sc2#
      • 1...Kxe5
        • 2.Bc3#
      • 1...Kc5!
    • 1.Sc2+?
      • 1...Kd5
        • 2.Qf5#
        • 2.g8Q#
        • 2.g8B#
      • 1...Kxd3!
    • 1.Bc3+?
      • 1...Ke3
        • 2.Qf4#
      • 1...Kxc3!
    • 1.Qxe2?
      • 1...e3
        • 2.Qg4#
      • 1...exd3!
    • 1.Qf5?
      • threat
        • 2.Qc5#
      • 1...Ke3
        • 2.Qf2#
      • 1...e3
        • 2.Sc2#
        • 2.Sc6#
        • 2.Qg4#
        • 2.Qf4#
        • 2.Qd5#
        • 2.Qe5#
      • 1...exd3!
    • 1.Qg5?
      • threat
        • 2.Qc5#
      • 1...e3
        • 2.Qf4#
        • 2.Qh4#
        • 2.Qg4#
        • 2.Qd5#
        • 2.Qe5#
      • 1...exd3!
  • Keys
    • 1.Sf4!
      • 1...Ke3
        • 2.Sc2#
      • 1...Kc5
        • 2.Se6#
      • 1...Ke5
        • 2.Bc3#
      • 1...e3
        • 2.Sfd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::S(E)
        • K(b);N_SPINP(c),S_FLIGHT::B(A)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::S(E)
        • K(b);N_SPINP(c),S_FLIGHT::B(A)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(A)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(A)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT,XS(C)
    • Try
      • S(C);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::S(E)
        • K(b);N_SPINP(c),S_FLIGHT,XS(C)::B(A)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT,XS(C)
    • Try
      • B(A);CHECK
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::QAB1(F)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT,XB(A)
    • Try
      • Q(F);N_PINP(c),XP(a)
      • Vars
        • P(c);OGATEB,SBLOCK::QAR(F)
      • Refutation
        • P(c);XS(C)
    • Try
      • Q(F);N_PINP(c)
      • Threat
        • QAB1(F)
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
      • Refutation
        • P(c);XS(C)
    • Try
      • Q(F);N_PINP(c)
      • Threat
        • QAB1(F)
      • Refutation
        • P(c);XS(C)
  • Actual
    • S(C);N_PINP(c)
    • Vars
      • K(b);S_FLIGHT::S(E)
      • K(b);S_FLIGHT::S(C)
      • K(b);S_FLIGHT::B(A)
      • P(c);SBLOCK::QAR(F)+S(C)
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