MESON Chess Problem Database

Problem Display
PID: 182370 (4B3/8/3p4/2pk4/8/2B5/3K4/4Q3 w - - 0 1)

Bobrov, Pavel Pavlovich

Deutsches Wochenschach, 1906

4B3/8/3p4/2pk4/8/2B5/3K4/4Q3

#2

4 + 3

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kc2?
      • 1...Kc4
        • 2.Qe4#
      • 1...c4!
    • 1.Ba4?
      • 1...Kc4
        • 2.Qe4#
      • 1...c4!
    • 1.Qh4?
      • 1...Ke6
        • 2.Qe4#
      • 1...c4!
    • 1.Qf1?
      • 1...Ke6
        • 2.Qf7#
      • 1...c4
        • 2.Qf5#
      • 1...Ke4!
    • 1.Qh1+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kc4!
  • Keys
    • 1.Qb1!
      • 1...Kc4
        • 2.Qa2#
      • 1...Ke6
        • 2.Qe4#
      • 1...c4
        • 2.Qf5#

Anticipated by 9476(1904)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • P(a);SBLOCK::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • K(b);S_FLIGHT::QAR2(A)
      • P(a);SBLOCK::QAR2(A)
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