MESON Chess Problem Database

Problem Display
PID: 192693 (5N1B/2p2pn1/2K2Q2/3P1p2/3pbk1P/2N2p1B/3n1P2/4R1r1 w - - 0 1)

Pike, Arthur G

The Problemist, 1981

5N1B/2p2pn1/2K2Q2/3P1p2/3pbk1P/2N2p1B/3n1P2/4R1r1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qe5#
    • 1...Bc2
      • 2.Qe5#
    • 1...Bd3
      • 2.Qe5#
    • 1...Bxd5+
      • 2.Sxd5#
    • 1...Sb1
      • 2.Rxe4#
    • 1...Sf1
      • 2.Rxe4#
    • 1...Sb3
      • 2.Rxe4#
    • 1...Sc4
      • 2.Rxe4#
    • 1...Sh5
      • 2.Qe5#
    • 1...Se6
      • 2.Qe5#
    • 1...Se8
      • 2.Qe5#
  • Tries
    • 1.Se6+?
      • 1...Sxe6
        • 2.Qe5#
      • 1...fxe6!
    • 1.Sd7?
      • threat
        • 2.Qe5#
      • 1...Bxd5+
        • 2.Sxd5#
      • 1...Sc4
        • 2.Rxe4#
      • 1...Rg6!
    • 1.Qg5+?
      • 1...Ke5
        • 2.Sd7#
        • 2.Qxf5#
      • 1...Rxg5!
    • 1.Qh6+?
      • 1...Ke5
        • 2.Sd7#
      • 1...Rg5!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qxc7#
      • 1...Rg6+
        • 2.Sxg6#
      • 1...Bxd5+
        • 2.Sxd5#
      • 1...Ke5
        • 2.Qxf5#
      • 1...Sc4
        • 2.Rxe4#
      • 1...Se6
        • 2.Sxe6#
      • 1...Se8
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • B(e);N_PINP(F)::QAB1(H)
    • B(e);CHECK,XP(F)::S(C),XB(e)
    • S(b);N_GUARD::R1(A),XB(e)
    • S(j);::QAB1(H)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • S(j);XS(I)::QAB1(H)
      • Refutation
        • P(i);XS(I)
    • Try
      • S(I);
      • Threat
        • QAB1(H)
      • Vars
        • B(e);CHECK,XP(F)::S(C),XB(e)
        • S(b);N_GUARD::R1(A),XB(e)
      • Refutation
        • R(a);P_PINQ(H)
    • Try
      • Q(H);CHECK,N_PINP(g)
      • Refutation
        • R(a);XQ(H)
    • Try
      • Q(H);CHECK,N_PINP(g)
      • Vars
        • K(f);P_SPINB(e),P_SPINS(j),S_FLIGHT::S(I)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • Q(H);XP(i)
    • Threat
      • QAB(H),XP(h)
    • Vars
      • R(a);CHECK,N_GUARD::S(I),XR(a)
      • B(e);CHECK,XP(F)::S(C),XB(e)
      • K(f);N_SPINP(g),P_SPINB(e),P_SPINS(j),S_FLIGHT::QAR1(H),XP(g)
      • S(b);N_GUARD::R1(A),XB(e)
      • S(j);N_GUARD::S(I),XS(j)
      • S(j);N_GUARD::S(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).