MESON Chess Problem Database

Problem Display
PID: 54924 (2R1rB2/2N1q3/1p1b4/1Pk2BR1/2p1p2r/Kn4p1/1Q1Nb3/8 w - - 0 1)

Schor, Laszlo

1st HM., White MT (B), 1952-1953

2R1rB2/2N1q3/1p1b4/1Pk2BR1/2p1p2r/Kn4p1/1Q1Nb3/8

#2

9 + 11

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Bxe6#
    • 1...Qxc7
      • 2.Be6#
    • 1...Qd7
      • 2.Be6#
    • 1...Bf4
      • 2.Sxe4#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bxc7
      • 2.Qe5#
    • 1...Sd4
      • 2.Qb4#
  • Tries
    • 1.Bg4+?
      • 1...Qe5
        • 2.Sxe4#
      • 1...Be5
        • 2.Sxe4#
        • 2.Qxe5#
      • 1...Qxg5!
    • 1.Be6+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Qxg5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sxb3#
      • 1...Qxc7
        • 2.Be6#
      • 1...Bxc7
        • 2.Qe5#
      • 1...Sxd2
        • 2.Qe3#
      • 1...Bf4
        • 2.Sxe4#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bd1
        • 2.Qxc4#
      • 1...Sa1
        • 2.Qe3#
      • 1...Sc1
        • 2.Qe3#
      • 1...Sd4
        • 2.Qb4#
      • 1...Sa5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(j);N_GUARD,P_SPINB(i)::R(F)+B(E),XQ(j)
    • Q(j);N_GUARD,P_SPINB(i),P_SPINQ(j),XS(G)::R(F)+B(E)
    • Q(j);N_GUARD,P_SPINB(i)::R(F)+B(E)
    • B(i);P_SPINQ(j),S_CUTR(f)::S(B),XP(e)
    • B(i);N_GUARD,P_SPINQ(j)::QAR2(A),XB(i)
    • B(i);N_GUARD,P_SPINB(i),P_SPINQ(j),XS(G)::QAR2(A)
    • S(b);OGATE,SBLOCK::QAB1(A)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • Q(j);P_SPINB(i),P_SPINQ(j)::S(B),XP(e)
      • Refutation
        • Q(j);P_SPINB(i),XR(F)
    • Try
      • B(E);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i),P_SPINQ(j)::QAR2(A),XB(i)
      • Refutation
        • Q(j);P_SPINB(i),XR(F)
  • Actual
    • Q(A);P_PINP(d)
    • Threat
      • S(B),XS(b)
    • Vars
      • Q(j);N_GUARD,P_SPINB(i),P_SPINQ(j),XS(G)::R(F)+B(E)
      • B(i);N_GUARD,P_SPINB(i),P_SPINQ(j),XS(G)::QAR2(A)
      • S(b);N_GUARD,XS(B)::QAB(A)
      • B(i);P_SPINQ(j),S_CUTR(f)::S(B),XP(e)
      • B(i);N_GUARD,P_SPINQ(j)::QAR2(A),XB(i)
      • B(a);N_GUARD::QAR1(A),XP(d)
      • S(b);N_GUARD::QAB(A)
      • S(b);SBLOCK::QAB1(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).