MESON Chess Problem Database

Problem Display
PID: 135393 (2BR4/r2n1NK1/1r2p3/q1Rn1kB1/3Q4/1N3P2/8/b7 w - - 0 1)

Santos, Vasco

2nd Comm., Olympic Ty., 1948

2BR4/r2n1NK1/1r2p3/q1Rn1kB1/3Q4/1N3P2/8/b7

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4+
      • 2.Sxd4#
    • 1...Sxc5
      • 2.Rxd5#
    • 1...Se5
      • 2.Qe4#
    • 1...Sf6
      • 2.Qf4#
    • 1...Sb8
      • 2.Rdxd5#
    • 1...Sf8
      • 2.Rdxd5#
    • 1...e5
      • 2.Qg4#
  • Tries
    • 1.Bc1?
      • threat
        • 2.Sh6#
      • 1...Bxd4+
        • 2.Sxd4#
      • 1...Sxc5
        • 2.Rxd5#
      • 1...e5
        • 2.Qg4#
      • 1...Se5
        • 2.Qe4#
      • 1...Sf6
        • 2.Qf4#
      • 1...Sb8
        • 2.Rdxd5#
      • 1...Sf8
        • 2.Rdxd5#
      • 1...Qd2!
    • 1.Bd2?
      • threat
        • 2.Sh6#
      • 1...Bxd4+
        • 2.Sxd4#
      • 1...Sxc5
        • 2.Rxd5#
      • 1...e5
        • 2.Qg4#
      • 1...Se5
        • 2.Qe4#
      • 1...Sf6
        • 2.Qf4#
      • 1...Sb8
        • 2.Rdxd5#
      • 1...Sf8
        • 2.Rdxd5#
      • 1...Qxd2!
  • Keys
    • 1.Be3!
      • threat
        • 2.Sh6#
      • 1...Bxd4+
        • 2.Sxd4#
      • 1...Sxc5
        • 2.Rxd5#
      • 1...e5
        • 2.Qg4#
      • 1...Se5
        • 2.Qe4#
      • 1...Sf6
        • 2.Qf4#
      • 1...Sb8
        • 2.Rdxd5#
      • 1...Sf8
        • 2.Rdxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(a);CHECK,XQ(C)::S(A),XB(a)
    • S(h);N_SPINS(c),OGATE,P_PINS(F),P_SPINP(f),XR(D)::R(I),XS(c)
    • S(h);N_PINQ(C),N_SPINS(c),P_PINS(F),P_SPINP(f)::QAB1(C)
    • S(h);N_PINQ(C),P_PINS(F),P_SPINP(f)::QAR1(C)
    • S(h);OGATE,P_PINS(F),P_SPINP(f)::R(I),XS(c)
    • P(f);N_PINQ(C),N_SPINS(c),P_SPINS(h)::QAB1(C)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(F)
      • Vars
        • B(a);CHECK,XQ(C)::S(A),XB(a)
        • S(h);N_SPINS(c),OGATE,P_PINS(F),P_SPINP(f),XR(D)::R(I),XS(c)
        • P(f);N_PINQ(C),N_SPINS(c),P_SPINS(h)::QAB1(C)
        • S(h);N_PINQ(C),N_SPINS(c),P_PINS(F),P_SPINP(f)::QAB1(C)
        • S(h);N_PINQ(C),P_PINS(F),P_SPINP(f)::QAR1(C)
        • S(h);OGATE,P_PINS(F),P_SPINP(f)::R(I),XS(c)
      • Refutation
        • Q(b);
    • Try
      • B(E);
      • Threat
        • S(F)
      • Vars
        • B(a);CHECK,XQ(C)::S(A),XB(a)
        • S(h);N_SPINS(c),OGATE,P_PINS(F),P_SPINP(f),XR(D)::R(I),XS(c)
        • P(f);N_PINQ(C),N_SPINS(c),P_SPINS(h)::QAB1(C)
        • S(h);N_PINQ(C),N_SPINS(c),P_PINS(F),P_SPINP(f)::QAB1(C)
        • S(h);N_PINQ(C),P_PINS(F),P_SPINP(f)::QAR1(C)
        • S(h);OGATE,P_PINS(F),P_SPINP(f)::R(I),XS(c)
      • Refutation
        • Q(b);XB(E)
  • Actual
    • B(E);
    • Threat
      • S(F)
    • Vars
      • B(a);CHECK,XQ(C)::S(A),XB(a)
      • S(h);N_SPINS(c),OGATE,P_PINS(F),P_SPINP(f),XR(D)::R(I),XS(c)
      • P(f);N_PINQ(C),N_SPINS(c),P_SPINS(h)::QAB1(C)
      • S(h);N_PINQ(C),N_SPINS(c),P_PINS(F),P_SPINP(f)::QAB1(C)
      • S(h);N_PINQ(C),P_PINS(F),P_SPINP(f)::QAR1(C)
      • S(h);OGATE,P_PINS(F),P_SPINP(f)::R(I),XS(c)
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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).