MESON Chess Problem Database

Problem Display
PID: 47457 (2KR4/B3p2P/2p2p2/2b1k3/2PNp1P1/6P1/1pQ1R2n/1q2r1N1 w - - 0 1)

Monteiro da Silveira, ?

2nd Prize, O Globo TT, 1960

2KR4/B3p2P/2p2p2/2b1k3/2PNp1P1/6P1/1pQ1R2n/1q2r1N1

#2

11 + 10

56 The Problemist 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Qxe4#
    • 1...Qa1
      • 2.Qxe4#
    • 1...Qc1
      • 2.Qxe4#
    • 1...Qd1
      • 2.Qxe4#
    • 1...Rc1
      • 2.Rxe4#
    • 1...Rd1
      • 2.Rxe4#
    • 1...Rf1
      • 2.Rxe4#
    • 1...Rxg1
      • 2.Rxe4#
    • 1...Sf1
      • 2.Sgf3#
    • 1...Sf3
      • 2.Sgxf3#
    • 1...Sxg4
      • 2.Sgf3#
    • 1...f5
      • 2.h8Q#
      • 2.h8B#
    • 1...e6
      • 2.Sxc6#
  • Keys
    • 1.Kd7!
      • threat
        • 2.Sxc6#
      • 1...Kxd4
        • 2.Ke6#
      • 1...Bxd4
        • 2.Bb8#
      • 1...Sxg4
        • 2.Sgf3#
      • 1...f5
        • 2.h8Q#
        • 2.h8B#
      • 1...Qd1
        • 2.Qxe4#
      • 1...Rd1
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::QAR1(B),XP(e)
    • R(b);N_GUARD::R1(C),XP(e)
    • R(b);N_GUARD,XS(A)::R1(C),XP(e)
    • S(d);N_GUARD::S(A)
    • S(d);N_GUARD::S(A),XS(d)
    • S(d);N_GUARD,XP(G)::S(A)
    • P(i);::P=Q
    • P(j);SBLOCK::S(F),XP(h)
  • Actual
    • K(J);S_FLIGHT
    • Threat
      • S(F),XP(h)
    • Vars
      • K(g);N_SPINP(e),P_SPINB(f),S_FLIGHT,XS(F)::R(K)+K(J)
      • B(f);N_GUARD,SBLOCK,XS(F)::B(H)
      • S(d);N_GUARD,XP(G)::S(A)
      • P(i);::P=Q
      • Q(a);N_GUARD,P_PINS(F)::QAR1(B),XP(e)
      • R(b);N_GUARD,P_PINS(F)::R1(C),XP(e)
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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).