MESON Chess Problem Database

Problem Display
PID: 201450 (1nKR4/4p1N1/6p1/2Rpk3/pN1r3p/2n5/bB1p1Q2/bBq1r3 w - - 0 1)

Mari, Alberto

Illustrato Delle Tre Venezie, 1922

1nKR4/4p1N1/6p1/2Rpk3/pN1r3p/2n5/bB1p1Q2/bBq1r3

#2

8 + 14

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxd5#
    • 1...Re4
      • 2.Sd3#
    • 1...Sxb1
      • 2.Qxd4#
    • 1...Sd1
      • 2.Qxd4#
    • 1...Se4
      • 2.Sd3#
    • 1...Sa6
      • 2.Sc6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Sd3+?
      • 1...Ke4
        • 2.Qf4#
      • 1...Rxd3!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Re6#
      • 1...Sxb1
        • 2.Qxd4#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...Rc4
        • 2.Rxd5#
      • 1...Sd1
        • 2.Qxd4#
        • 2.Qh2#
      • 1...Se2
        • 2.Qe3#
      • 1...Se4
        • 2.Sd3#
      • 1...Sb5
        • 2.Qh2#
      • 1...e6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(h);N_GUARD,P_PINR(E),P_SPINS(f),S_CUTB(d)::R1(H),XP(j)
    • R(h);N_GUARD,P_SPINS(f),SBLOCK::S(D)
    • S(f);P_PINR(E),P_SPINR(h),XB(A)::QAB1(C),XR(h)
    • S(f);P_PINR(E),P_SPINR(h)::QAB1(C),XR(h)
    • S(f);P_PINR(E),P_SPINR(h),SBLOCK::S(D)
    • S(n);N_GUARD::S(D)
    • S(n);N_GUARD::S(D),XS(n)
    • P(l);N_GUARD::QAR1(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(k);N_SPINP(j),P-FLIGHT::QAR1(C)
      • Refutation
        • R(h);P_SPINS(f),XS(D)
  • Actual
    • R(E);N_PINP(j)
    • Threat
      • R1(E)
    • Vars
      • S(f);P_PINR(E),P_SPINR(h),XB(A)::QAB1(C),XR(h)
      • S(n);XR(E)::S(D),XS(n)
      • R(h);N_GUARD,P_PINR(E),P_SPINS(f),S_CUTB(d)::R1(H),XP(j)
      • S(f);N_GUARD,P_PINR(E),P_SPINR(h),S_CUTR(c)::QAR2(C)
      • S(f);P_PINR(E),P_SPINR(h),SBLOCK::S(D)
      • S(f);P_PINR(E),P_SPINR(h)::QAB(C)
      • P(m);::R1(E),XP(m)
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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).