MESON Chess Problem Database

Problem Display
PID: 21706 (BbbB4/1PPp4/2k5/3p4/1P3Q2/8/1K6/8 w - - 0 1)

Havel, Miroslav

5th Prize, Goteborg Chess Club, 1920

BbbB4/1PPp4/2k5/3p4/1P3Q2/8/1K6/8

#2

7 + 5

6024 Bohemian Garnets 1923
3360 Simple Two-move Themes 1924
4872 Themes-64 1956
2988 Izbrannie Kompozitsi 1985
3310 2345 Chess Problems 1997
9939 64 Shakhmatnoe obozrenie 2021

SOLUTION

  • SOUND
  • Tries
    • 1.bxc8Q+?
      • 1...Kb6
        • 2.Qb7#
        • 2.cxb8Q#
      • 1...Kb5!
    • 1.bxc8B+?
      • 1...Kb6
        • 2.cxb8Q#
      • 1...Kb5!
    • 1.cxb8Q?
      • threat
        • 2.bxc8Q#
        • 2.bxc8S#
        • 2.bxc8B#
        • 2.bxc8R#
      • 1...Bxb7
        • 2.Qxb7#
      • 1...d4
        • 2.bxc8Q#
        • 2.bxc8S#
        • 2.bxc8B#
        • 2.bxc8R#
      • 1...d6
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Kb5!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qa6#
        • 2.bxc8S#
      • 1...Kb6
        • 2.bxc8S#
      • 1...Kd6
        • 2.Qf6#
      • 1...Bxc7
        • 2.bxc8S#
      • 1...Bxb7
        • 2.Qa6#
      • 1...d4
        • 2.bxc8S#
      • 1...Ba7
        • 2.bxc8S#
      • 1...d6
        • 2.cxb8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(D);CHECK,XB(e)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(D);CHECK,XB(e)
      • Vars
        • K(b);P-FLIGHT::PXB(d)=Q
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);XB(d)
      • Threat
        • DUALS(4)
      • Vars
        • B(e);OGATE,P_SPINB(e),XP(D)::QAB1(E),XB(e)
        • P(c);::PXB(e)=Q
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT::PXB(e)=S
      • K(b);P-FLIGHT::QAR2(C)
      • B(d);XP(E)::PXB(e)=S
      • B(e);P_SPINB(e),XP(D)::QAR2(C)
      • P(a);::PXB(e)=S
      • B(d);::PXB(e)=S
      • P(c);SBLOCK::PXB(d)=S
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