MESON Chess Problem Database

Problem Display
PID: 148536 (8/5p2/1Rpp1B2/5p2/1pkP1R2/5Q2/5p2/5K2 w - - 0 1)

Keeble, John Frederick

Source?, 0000

8/5p2/1Rpp1B2/5p2/1pkP1R2/5Q2/5p2/5K2

#2

6 + 7

15 British Chess Magazine 1901
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qxb3#
    • 1...c5
      • 2.d5#
  • Tries
    • 1.Kxf2?
      • 1...b3
        • 2.Qxb3#
      • 1...c5
        • 2.d5#
      • 1...d5!
    • 1.Be7?
      • 1...d5
        • 2.Rxb4#
      • 1...b3
        • 2.Qxb3#
      • 1...c5
        • 2.d5#
      • 1...f6!
    • 1.Rb7?
      • 1...b3
        • 2.Qxb3#
      • 1...c5
        • 2.d5#
      • 1...d5!
    • 1.Rb8?
      • 1...b3
        • 2.Qxb3#
      • 1...c5
        • 2.d5#
      • 1...d5!
    • 1.Qe2+?
      • 1...Kc3
        • 2.Rf3#
      • 1...Kd5
        • 2.Rxf5#
      • 1...Kb3!
    • 1.Qd3+?
      • 1...Kd5
        • 2.Qb3#
      • 1...Kxd3!
  • Keys
    • 1.Qd1!
      • 1...Kc3
        • 2.d5#
      • 1...Kd5
        • 2.Qb3#
      • 1...d5
        • 2.Qc2#
      • 1...b3
        • 2.Qxb3#
      • 1...c5
        • 2.d5#

This anticipates 175752(1898)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);::QAB1(B),XP(b)
    • P(e);SBLOCK::R(D)+P(C)
  • Tries
    • Try
      • K(A);P-FLIGHT,XP(a)
      • Vars
        • P(b);::QAB1(B),XP(b)
        • P(e);SBLOCK::R(D)+P(C)
      • Refutation
        • P(f);
    • Try
      • B(F);
      • Vars
        • P(f);::R1(E),XP(b)
        • P(b);::QAB1(B),XP(b)
        • P(e);SBLOCK::R(D)+P(C)
      • Refutation
        • P(g);
    • Try
      • R(E);
      • Vars
        • P(b);::QAB1(B),XP(b)
        • P(e);SBLOCK::R(D)+P(C)
      • Refutation
        • P(f);
    • Try
      • R(E);
      • Vars
        • P(b);::QAB1(B),XP(b)
        • P(e);SBLOCK::R(D)+P(C)
      • Refutation
        • P(f);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::R(D)
        • K(c);S_FLIGHT::R(D),XP(d)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(c);P-FLIGHT::B(F)+P(C)
      • K(c);S_FLIGHT::QAB(B)
      • P(f);SBLOCK::QAR2(B)
      • P(b);::QAB1(B),XP(b)
      • P(e);SBLOCK::R(D)+P(C)
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