MESON Chess Problem Database

Problem Display
PID: 146281 (2K3Q1/pp2pn2/R1npk3/p7/q5bB/1PbNN3/B7/8 w - - 0 1)

Tump, Raymond

American Chess Problemist, 1950

2K3Q1/pp2pn2/R1npk3/p7/q5bB/1PbNN3/B7/8

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb3
      • 2.Qxg4#
    • 1...Qxa2
      • 2.Qxg4#
    • 1...Qa3
      • 2.Qxg4#
    • 1...Be1
      • 2.Qg6#
    • 1...Bd2
      • 2.Qg6#
    • 1...Bb4
      • 2.Qxg4#
      • 2.Qg6#
    • 1...Bd4
      • 2.Qxg4#
    • 1...Sb4
      • 2.Qxg4#
    • 1...Sd4
      • 2.Qg6#
    • 1...Se5
      • 2.Sc5#
    • 1...Sb8
      • 2.bxa4#
    • 1...Sd8
      • 2.bxa4#
  • Tries
    • 1.b4+?
      • 1...Qb3
        • 2.Qxg4#
      • 1...Qxa2
        • 2.Qxg4#
      • 1...d5!
  • Keys
    • 1.Kc7!
      • threat
        • 2.Qc8#
      • 1...Sb4
        • 2.Qxg4#
      • 1...Sd4
        • 2.Qg6#
      • 1...Se5
        • 2.Sc5#
      • 1...Sb8
        • 2.bxa4#
      • 1...Sd8
        • 2.bxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD,P_SPINQ(b),XP(B)::QAB(H),XB(c)
    • Q(b);N_GUARD,XB(A)::QAB(H),XB(c)
    • Q(b);N_GUARD::QAB(H),XB(c)
    • B(a);N_GUARD::QAR2(H)
    • B(a);S_CUTQ(b)::QAB(H),XB(c)
    • S(e);P_SPINP(f),S_CUTQ(b)::QAB(H),XB(c)
    • S(e);P_SPINP(f),S_CUTB(a)::QAR2(H)
    • S(e);P_SPINP(f),SBLOCK::S(C)
    • S(e);P_SPINP(f)::B(A)+P(B),XQ(b)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::QAB(H),XB(c)
        • Q(b);XB(A)::QAB(H),XB(c)
      • Refutation
        • P(f);N_SPINS(k),P_SPINP(f),P_SPINS(e)
  • Actual
    • K(G);P-FLIGHT
    • Threat
      • QAB(H)
    • Vars
      • S(e);P_SPINP(f),S_CUTQ(b)::QAB(H),XB(c)
      • S(e);P_SPINP(f),S_CUTB(a)::QAR2(H)
      • S(e);P_SPINP(f),SBLOCK::S(C)
      • S(e);P_SPINP(f)::B(A)+P(B),XQ(b)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).