MESON Chess Problem Database

Problem Display
PID: 197357 (1B2BR2/K1p2rp1/p4bp1/1bQN1kr1/2p4P/2npR2P/2N5/6q1 w - - 0 1)

Millins, Edward

Millins, James Lever

The Problemist, 1981

1B2BR2/K1p2rp1/p4bp1/1bQN1kr1/2p4P/2npR2P/2N5/6q1

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Sd4#
    • 1...Re7
      • 2.Sd4#
    • 1...Bd4
      • 2.Sxd4#
    • 1...Be7
      • 2.Sd4#
    • 1...Bd8
      • 2.Sd4#
    • 1...c6+
      • 2.Se7#
  • Tries
    • 1.Sxc3+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kf4!
    • 1.Bd7+?
      • 1...Rxd7
        • 2.Sd4#
      • 1...Bxd7!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qe6#
      • 1...Qxe3+
        • 2.Scxe3#
      • 1...Bd4+
        • 2.Sxd4#
      • 1...Rxe7
        • 2.Sd4#
      • 1...Bxe7
        • 2.Sd4#
      • 1...Sxd5
        • 2.Qe4#
      • 1...Bd7
        • 2.Bxd7#
      • 1...Be5
        • 2.Qxe5#
      • 1...Se4
        • 2.Qxe4#
      • 1...c5
        • 2.Rf3#
      • 1...c6
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(l);P_SPINB(i)::S(A)
    • B(i);N_GUARD,P_PINQ(E),P_SPINR(l)::S(A),XB(i)
    • B(i);N_GUARD,P_SPINR(l)::S(A)
    • P(k);CHECK::QAR(E)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK,XS(b)
      • Vars
        • B(i);N_GUARD,P_SPINB(i),P_SPINR(l)::QAR1(E),XB(i)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(k)
    • Try
      • B(I);CHECK
      • Vars
        • R(l);P_SPINB(i),XB(I)::S(A)
      • Refutation
        • B(e);XB(I)
  • Actual
    • Q(E);P_SPINR(B)
    • Threat
      • QAB1(E)
    • Vars
      • Q(a);CHECK,XR(B)::S(A),XQ(a)
      • B(i);CHECK,N_GUARD,N_PINR(B),P_SPINR(l)::S(A),XB(i)
      • R(l);P_SPINB(i),XQ(E)::S(A)
      • B(i);N_GUARD,P_SPINR(l),XQ(E)::S(A)
      • S(b);N_GUARD,XS(F)::QAB1(E)
      • B(e);N_GUARD::B(I),XB(e)
      • B(i);N_GUARD,P_SPINR(l)::QAR1(E),XB(i)
      • S(b);N_GUARD::QAB1(E),XS(b)
      • P(k);N_PINR(B),P_PINQ(E)::R(B)
      • P(k);P_PINQ(E),S_CUTB(e)::B(I)
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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).