MESON Chess Problem Database

Problem Display
PID: 145760 (2b5/Kp2B1r1/8/7n/1Q1p1pk1/p1r3Np/4N2P/3B1Rb1 w - - 0 1)

Mari, Alberto

Magyar Sakkvilag, 1932

2b5/Kp2B1r1/8/7n/1Q1p1pk1/p1r3Np/4N2P/3B1Rb1

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sxf4#
    • 1...Rc5
      • 2.Sxf4#
    • 1...Rc6
      • 2.Sxf4#
    • 1...Rc7
      • 2.Sxf4#
    • 1...Be3
      • 2.Sxf4#
    • 1...d3+
      • 2.Sxg1#
    • 1...fxg3
      • 2.Sxc3#
  • Tries
    • 1.Sc1+?
      • 1...Rf3
        • 2.Bxf3#
      • 1...f3!
    • 1.Sxg1+?
      • 1...Rf3
        • 2.Bxf3#
      • 1...f3!
    • 1.Sxd4+?
      • 1...Rf3
        • 2.Bxf3#
      • 1...f3!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qxh5#
      • 1...Rxg3
        • 2.Qxc8#
      • 1...Rxc5
        • 2.Sxf4#
      • 1...Sxg3
        • 2.Rxf4#
      • 1...fxg3
        • 2.Sxc3#
      • 1...Rg5
        • 2.Qxg5#
      • 1...Sf6
        • 2.Rxf4#
      • 1...Rh7
        • 2.Qg5#
      • 1...Bf5
        • 2.Qxf5#
      • 1...d3
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::B(A)+S(C),XP(f)
    • B(a);S_CUTR(c)::B(A)+S(C),XP(f)
    • P(e);CHECK,P_SPINP(f),S_CUTR(c)::B(A)+S(C),XB(a)
    • P(f);N_GUARD,P_SPINP(e),XS(E)::B(A)+S(C),XR(c)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(A),XR(c)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • S(C);CHECK,XB(a)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(A),XR(c)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • S(C);CHECK,P_SPINS(C),XP(e)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(A),XR(c)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F),XS(h)
    • Vars
      • R(c);N_GUARD,XS(E)::QAB(F),XB(k)
      • R(c);N_GUARD,XQ(F)::B(A)+S(C),XP(f)
      • S(h);N_GUARD,XS(E)::R1(B),XP(f)
      • P(f);N_GUARD,XS(E)::B(A)+S(C),XR(c)
      • R(j);N_GUARD::QAR1(F),XR(j)
      • S(h);N_GUARD::R1(B),XP(f)
      • R(j);N_GUARD::QAR1(F)
      • B(k);N_GUARD::QAB1(F),XB(k)
      • P(e);P_PINQ(F),S_CUTR(c)::B(A)+S(C),XP(f)
HTML5 logo

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).