MESON Chess Problem Database

Problem Display
PID: 203633 (8/1B1p3n/2nPp3/1Rp1p2R/3pk1P1/4Np2/K2Q1B2/7N w - - 0 1)

Boros, Sandor

Nepszava, 1924

8/1B1p3n/2nPp3/1Rp1p2R/3pk1P1/4Np2/K2Q1B2/7N

#2

10 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • threat
        • 2.Rxe5#
      • 1...Kd5
        • 2.Qxd4#
      • 1...Sg5!
    • 1.Bxc6+?
      • 1...Kf4
        • 2.Bg3#
      • 1...dxc6!
    • 1.Rxe5+?
      • 1...Kf4
        • 2.Bg3#
      • 1...Kxe5!
    • 1.Qc2+?
      • 1...d3
        • 2.Qc4#
      • 1...Kf4!
    • 1.Qd3+?
      • 1...Kf4
        • 2.Bg3#
      • 1...Kxd3!
  • Keys
    • 1.Sd5!
      • 1...Sb4+
        • 2.Sxb4#
      • 1...Kxd5
        • 2.Qxd4#
      • 1...exd5
        • 2.Sg3#
      • 1...Sg5
        • 2.Sf6#
      • 1...Sa5
        • 2.Sg3#
        • 2.Sc3#
        • 2.Sf6#
      • 1...Sa7
        • 2.Sg3#
        • 2.Sc3#
        • 2.Sf6#
      • 1...Se7
        • 2.Sg3#
        • 2.Sc3#
        • 2.Sf6#
        • 2.Sxe7#
      • 1...Sb8
        • 2.Sg3#
        • 2.Sc3#
        • 2.Sf6#
      • 1...Sd8
        • 2.Sg3#
        • 2.Sc3#
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sf8
        • 2.Sf6#
      • 1...d3
        • 2.Sc3#
      • 1...c4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(H),XP(e)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAR1(C),XP(b)
      • Refutation
        • S(i);
    • Try
      • B(J);CHECK,XS(f)
      • Vars
        • K(c);P-FLIGHT::B(D)
      • Refutation
        • P(h);XB(J)
    • Try
      • R(H);CHECK,XP(e)
      • Vars
        • K(c);N_SPINS(f),P-FLIGHT::B(D)
      • Refutation
        • K(c);N_SPINS(f),P-FLIGHT,P_SPINP(d),XR(H)
    • Try
      • Q(C);CHECK
      • Vars
        • P(b);OGATEB,P_SPINP(b)::QAR2(C)
      • Refutation
        • K(c);N_SPINS(f),P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_SPINS(f),P-FLIGHT::B(D)
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT,XQ(C)
  • Actual
    • S(E);N_PINS(f)
    • Vars
      • S(f);CHECK::B(J)+S(E),XS(f)
      • K(c);P_SPINP(b),P_SPINS(f),S_FLIGHT,XS(E)::QAR1(C),XP(b)
      • P(g);SBLOCK,XS(E)::S(A)
      • S(i);N_GUARD::S(E)
      • S(i);N_GUARD::S(E),XS(i)
      • P(b);N_GUARD::S(E)
      • P(d);::S(A)
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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).