MESON Chess Problem Database

Problem Display
PID: 258667 (1b3n2/1Kpk1BR1/7R/QP2PN2/8/4p3/8/8 w - - 0 1)

Pringle, TA

English Mechanic and World of Science, 1904

(First published on Wed Mar 9 1904)

1b3n2/1Kpk1BR1/7R/QP2PN2/8/4p3/8/8

#2

8 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.Qxc7#
    • 1...e2
      • 2.Qd2#
    • 1...c5
      • 2.Bh5#
      • 2.bxc5 ep#
    • 1...c6
      • 2.Bh5#
      • 2.bxc6#
  • Tries
    • 1.Kxb8?
      • threat
        • 2.Qxc7#
      • 1...Kd8
        • 2.Qxc7#
      • 1...c5
        • 2.Bh5#
        • 2.Rd6#
        • 2.Qc7#
        • 2.bxc5 ep#
      • 1...c6
        • 2.Bh5#
        • 2.Rd6#
        • 2.Qc7#
        • 2.bxc6#
      • 1...Se6!
    • 1.Qb4?
      • threat
        • 2.Qe7#
        • 2.Qd4#
      • 1...Kd8
        • 2.Qe7#
      • 1...Se6
        • 2.Qe7#
      • 1...Ba7
        • 2.Qe7#
      • 1...Sg6
        • 2.Qd4#
      • 1...c6
        • 2.Qe7#
      • 1...c5!
    • 1.Qa3?
      • threat
        • 2.Qe7#
        • 2.Qd3#
      • 1...Kd8
        • 2.Qe7#
      • 1...Se6
        • 2.Qe7#
      • 1...Ba7
        • 2.Qe7#
      • 1...Sg6
        • 2.Qd3#
      • 1...c6
        • 2.Qe7#
      • 1...c5!
  • Keys
    • 1.Rg8!
      • 1...Kd8
        • 2.Rd6#
      • 1...Se6
        • 2.Bxe6#
      • 1...Ba7
        • 2.Qxc7#
      • 1...Sg6
        • 2.e6#
      • 1...Sh7
        • 2.Be6#
        • 2.e6#
      • 1...e2
        • 2.Qd2#
      • 1...c5
        • 2.bxc5 ep#
      • 1...c6
        • 2.bxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD::QAR1(A),XP(b)
    • P(a);N_GUARD::QAR(A)
  • Tries
    • Try
      • K(F);P-FLIGHT,XB(d)
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAB1(A),XP(b)
      • Refutation
        • S(e);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
        • S(e);::QAR1(A)
        • B(d);::QAR1(A)
        • S(e);::QAR(A)
        • P(b);::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
        • S(e);::QAR1(A)
        • B(d);::QAR1(A)
        • S(e);::QAR(A)
        • P(b);::QAR1(A)
      • Refutation
        • P(b);
  • Actual
    • R(H);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b),P_SPINS(e)::R(E)
      • S(e);N_GUARD::B(G),XS(e)
      • B(d);N_GUARD::QAR1(A),XP(b)
      • S(e);N_GUARD::P(C)
      • P(a);N_GUARD::QAR(A)
      • P(b);OGATE::P(B),XP(b),EP
      • P(b);OGATE::P(B),XP(b)
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