MESON Chess Problem Database

Problem Display
PID: 220492 (8/8/8/8/N3pp2/4kB2/3R4/6KQ w - - 0 1)

Barbier, Georges Emile

English Mechanic and World of Science, 1875

(First published on Fri Oct 22 1875)

8/8/8/8/N3pp2/4kB2/3R4/6KQ

#2

5 + 3

15239 Valois Notebooks 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kh2?
      • 1...exf3
        • 2.Qe1#
      • 1...Kxd2!
    • 1.Bd1?
      • 1...f3
        • 2.Qh6#
      • 1...Kxd2!
    • 1.Be2?
      • 1...f3
        • 2.Qh6#
      • 1...Kxd2!
    • 1.Bg2?
      • 1...f3
        • 2.Qh6#
      • 1...Kxd2!
    • 1.Bg4?
      • 1...f3
        • 2.Qh6#
      • 1...Kxd2!
    • 1.Qh2?
      • threat
        • 2.Qe2#
        • 2.Qf2#
      • 1...Kxf3
        • 2.Qh3#
      • 1...exf3!
    • 1.Qh4?
      • threat
        • 2.Qf2#
      • 1...Kxf3
        • 2.Qh3#
      • 1...exf3
        • 2.Qe1#
      • 1...Kxd2!
    • 1.Qh7?
      • 1...Kxf3
        • 2.Qh3#
      • 1...exf3
        • 2.Qd3#
      • 1...Kxd2!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qc3#
      • 1...Kxd2
        • 2.Qc3#
      • 1...Kxf3
        • 2.Qh3#
      • 1...exf3
        • 2.Qd4#

This anticipates 142034(0000)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • P(b);SBLOCK,XB(D)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • B(D);
      • Vars
        • P(c);OGATEB::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • B(D);
      • Vars
        • P(c);OGATEB::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • B(D);
      • Vars
        • P(c);OGATEB::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • B(D);
      • Vars
        • P(c);OGATEB::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(D)::QAR2(B)
      • Refutation
        • P(b);XB(D)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(D)::QAR2(B)
        • P(b);SBLOCK,XB(D)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(D)::QAR2(B)
        • P(b);OGATE,SBLOCK,XB(D)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(a);S_FLIGHT,XR(C)::QAB1(B)
      • K(a);OGATEB,P-FLIGHT,XB(D)::QAR2(B)
      • P(b);SBLOCK,XB(D)::QAB1(B)
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