MESON Chess Problem Database

Problem Display
PID: 80958 (8/1p6/b6N/Rp3N2/4kP2/1P1n2P1/2Q1Kn2/8 w - - 0 1)

Andrade, Barry Jack da Costa

The Field, 1950

(First published on Sat Apr 29 1950)

8/1p6/b6N/Rp3N2/4kP2/1P1n2P1/2Q1Kn2/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qc4#
    • 1...Sd1
      • 2.Qxd3#
    • 1...Sh1
      • 2.Qxd3#
    • 1...Sh3
      • 2.Qxd3#
    • 1...Sg4
      • 2.Qxd3#
    • 1...b4
      • 2.Re5#
    • 1...b6
      • 2.Qc6#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Re5#
        • 2.Qc4#
      • 1...Sg4
        • 2.Qxd3#
        • 2.Qc4#
      • 1...Bxb5!
    • 1.Rxa6?
      • 1...bxa6
        • 2.Qc6#
      • 1...b4
        • 2.Qc4#
      • 1...Sd1
        • 2.Qxd3#
      • 1...Sh1
        • 2.Qxd3#
      • 1...Sh3
        • 2.Qxd3#
      • 1...Sg4
        • 2.Qxd3#
      • 1...b6
        • 2.Qc6#
      • 1...Kd5!
    • 1.b4?
      • 1...Sd1
        • 2.Qxd3#
      • 1...Sh1
        • 2.Qxd3#
      • 1...Sh3
        • 2.Qxd3#
      • 1...Sg4
        • 2.Qxd3#
      • 1...b6
        • 2.Qc6#
      • 1...Kd5!
  • Keys
    • 1.Kf1!
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qc4#
      • 1...Sd1
        • 2.Qg2#
      • 1...Sh1
        • 2.Qg2#
      • 1...Sh3
        • 2.Qg2#
      • 1...Sg4
        • 2.Qg2#
      • 1...b4
        • 2.Qe2#
      • 1...b6
        • 2.Qc6#

There are these versions: 51203

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(b),P_SPINP(d),S_FLIGHT::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(b)
    • P(d);OGATE::R1(F)
    • P(f);N_GUARD::QAB(A)
  • Tries
    • Try
      • R(F);XP(d)
      • Threat
        • DUALS(2)
      • Refutation
        • B(e);XR(F)
    • Try
      • R(F);XB(e)
      • Vars
        • P(f);N_GUARD,XR(F)::QAB(A)
        • P(d);N_GUARD::QAR2(A)
        • S(a);N_GUARD::QAB1(A),XS(b)
        • P(f);N_GUARD::QAB(A)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • P(C);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(b)
        • P(f);N_GUARD::QAB(A)
      • Refutation
        • K(c);N_SPINS(b),P_SPINP(d),S_FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • K(c);N_SPINS(b),S_FLIGHT::QAB1(A)
      • K(c);N_SPINS(b),P_SPINP(d),S_FLIGHT::QAB1(A)
      • S(a);OGATE::QAB(A)
      • P(d);::QAR2(A)
      • P(f);N_GUARD::QAB(A)
HTML5 logo

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).