MESON Chess Problem Database

Problem Display
PID: 98466 (b1BN4/b2p4/P2Q4/Bknn1R1r/1p3p2/1P1ppp1p/R2N4/7K w - - 0 1)

Paros, Gyorgy

4th HM., BCPS 031. Ty., 1937

b1BN4/b2p4/P2Q4/Bknn1R1r/1p3p2/1P1ppp1p/R2N4/7K

#2

10 + 13

56 The Problemist 1937
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb3
      • 2.Qxb4#
    • 1...Sa4
      • 2.Qxb4#
    • 1...Se4
      • 2.Qxb4#
    • 1...Sxa6
      • 2.Bxa6#
    • 1...Se6
      • 2.Qxb4#
    • 1...Sb7
      • 2.Bxd7#
    • 1...Sc3
      • 2.Qxd3#
    • 1...Sb6
      • 2.Qxc5#
    • 1...Sf6
      • 2.Qxd3#
    • 1...Sc7
      • 2.Qxd3#
    • 1...Se7
      • 2.Qxd3#
  • Tries
    • 1.Bxd7+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Sxd7!
    • 1.Qxd7+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Sxd7!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Sd4#
      • 1...Sxb3
        • 2.Qxb4#
      • 1...Sxa6
        • 2.Bxa6#
      • 1...Sa4
        • 2.Qxb4#
      • 1...Se4
        • 2.Qxb4#
      • 1...Se6
        • 2.Qxb4#
      • 1...Sb7
        • 2.Bxd7#
      • 1...Sc3
        • 2.Qxd3#
      • 1...Sb6
        • 2.Qxc5#
      • 1...Sf6
        • 2.Qxd3#
      • 1...Sc7
        • 2.Qxd3#
      • 1...Se7
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(h);OGATE,P_SPINS(i),XP(D)::QAR1(H),XP(e)
    • S(h);OGATE,P_SPINS(i)::QAR1(H),XP(e)
    • S(h);OGATE,P_SPINS(i),XP(G)::B(I),XS(h)
    • S(h);N_GUARD,P_SPINS(i),S_CUTB(m)::B(I),XP(l)
    • S(i);OGATE,P_SPINS(h)::QAB(H),XP(a)
    • S(i);P_SPINS(h),S_CUTB(k)::QAR1(H),XS(h)
  • Tries
    • Try
      • B(I);CHECK,XP(l)
      • Vars
        • B(m);N_GUARD,P_SPINB(m)::QAB1(H),XB(m)
      • Refutation
        • S(h);P_SPINS(i),XB(I)
    • Try
      • Q(H);CHECK,XP(l)
      • Vars
        • B(m);N_GUARD,P_SPINB(m)::QAB1(H),XB(m)
      • Refutation
        • S(h);P_SPINS(i),XQ(H)
  • Actual
    • S(C);XP(c)
    • Threat
      • S(C)
    • Vars
      • S(h);OGATE,P_SPINS(i),XP(D)::QAR1(H),XP(e)
      • S(h);OGATE,P_SPINS(i),XP(G)::B(I),XS(h)
      • S(h);OGATE,P_SPINS(i)::QAR1(H),XP(e)
      • S(h);N_GUARD,P_SPINS(i),S_CUTB(m)::B(I),XP(l)
      • S(i);OGATE,P_PINS(C),P_SPINS(h)::QAB(H),XP(a)
      • S(i);P_PINS(C),P_SPINS(h),S_CUTB(k)::QAR1(H),XS(h)
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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).