MESON Chess Problem Database

Problem Display
PID: 169299 (4bK2/6R1/3Bpk2/5q2/3N4/5Q2/8/8 w - - 0 1)

Caillaud, Michel

Kerhuel, Maryan

1st HM., SuperProblem 186. TT, 2017

4bK2/6R1/3Bpk2/5q2/3N4/5Q2/8/8

#2

5 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Qxf4#
    • 1...e5
      • 2.Be7#
      • 2.Qxf5#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Be7#
      • 1...Qc5
        • 2.Qxe6#
      • 1...Qe4!
    • 1.Qe4?
      • threat
        • 2.Be7#
      • 1...Qc5
        • 2.Qxe6#
      • 1...Qxe4!
    • 1.Qg3?
      • threat
        • 2.Be7#
      • 1...Qf4
        • 2.Qxf4#
      • 1...Qc5!
    • 1.Qf4?
      • threat
        • 2.Be5#
        • 2.Be7#
      • 1...e5
        • 2.Bxe5#
        • 2.Be7#
        • 2.Qxf5#
      • 1...Qxf4!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Be7#
      • 1...Qe4
        • 2.Qg5#
      • 1...Qc5
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(a);OGATEB::QAR2(A),XQ(a)
  • Tries
    • Try
      • Q(A);N_PINQ(a)
      • Threat
        • B(C)
      • Vars
        • Q(a);N_GUARD,P_PINB(C)::QAR1(A),XP(b)
      • Refutation
        • Q(a);
    • Try
      • Q(A);N_PINQ(a)
      • Threat
        • B(C)
      • Vars
        • Q(a);N_GUARD,P_PINB(C)::QAR1(A),XP(b)
      • Refutation
        • Q(a);XQ(A)
    • Try
      • Q(A);N_PINQ(a)
      • Threat
        • B(C)
      • Vars
        • Q(a);OGATEB::QAR2(A),XQ(a)
      • Refutation
        • Q(a);P_PINB(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • Q(a);N_SPINQ(a),XQ(A)
  • Actual
    • Q(A);N_PINQ(a)
    • Threat
      • B(C)
    • Vars
      • Q(a);N_GUARD::QAB1(A)
      • Q(a);N_GUARD,P_PINB(C)::QAR1(A),XP(b)
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