MESON Chess Problem Database

Problem Display
PID: 194116 (n7/3N2pp/3p3q/1p5r/kP1p4/p5r1/Q1P2bPp/1R1b3K w - - 0 1)

Novejarque Iranzo, Angel

5th HM., Spanish National Ty., 1917

n7/3N2pp/3p3q/1p5r/kP1p4/p5r1/Q1P2bPp/1R1b3K

#2

7 + 14

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg2
      • 2.Qb3#
    • 1...Rb3
      • 2.Qxb3#
    • 1...Rg4
      • 2.Qb3#
    • 1...Rgg5
      • 2.Qb3#
    • 1...Rg6
      • 2.Qb3#
    • 1...Bf3
      • 2.Qb3#
    • 1...Be3
      • 2.Qb3#
    • 1...Sb6
      • 2.Sxb6#
    • 1...Sc7
      • 2.Sb6#
    • 1...d3
      • 2.Qb3#
    • 1...d5
      • 2.Sc5#
  • Tries
    • 1.Rb3?
      • threat
        • 2.Qxa3#
      • 1...Rxb3
        • 2.Qxb3#
      • 1...Qc1!
    • 1.Qd5?
      • threat
        • 2.Qxa8#
      • 1...Rb3
        • 2.Qxb3#
      • 1...Bf3
        • 2.Qb3#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sc7
        • 2.Sb6#
      • 1...d3
        • 2.Qb3#
      • 1...Rxd5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qxa8#
      • 1...Rb3
        • 2.Qxb3#
      • 1...Bf3
        • 2.Qb3#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sc7
        • 2.Sb6#
      • 1...d3
        • 2.Qb3#
      • 1...d5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(e);N_GUARD,XP(E)::QAB1(C)
    • R(e);N_GUARD::QAB1(C),XR(e)
    • R(e);N_GUARD::QAB1(C)
    • B(a);P_PINP(E),S_CUTR(e)::QAB1(C)
    • B(b);S_CUTR(e)::QAB1(C)
    • S(n);N_GUARD::S(G),XS(n)
    • S(n);N_GUARD::S(G)
    • P(g);S_CUTR(e)::QAB1(C)
    • P(j);N_GUARD,S_CUTR(i)::S(G)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(C),XP(d)
      • Vars
        • R(e);OGATE,XR(A)::QAB1(C),XR(e)
      • Refutation
        • Q(k);
    • Try
      • Q(C);N_PINP(d)
      • Threat
        • QAR(C),XS(n)
      • Vars
        • R(e);N_GUARD::QAB1(C),XR(e)
        • B(a);P_PINP(E),S_CUTR(e)::QAB1(C)
        • S(n);N_GUARD::S(G),XS(n)
        • S(n);N_GUARD::S(G)
        • P(g);S_CUTR(e)::QAB1(C)
      • Refutation
        • R(i);XQ(C)
  • Actual
    • Q(C);N_PINP(d)
    • Threat
      • QAR(C),XS(n)
    • Vars
      • R(e);N_GUARD::QAB1(C),XR(e)
      • B(a);P_PINP(E),S_CUTR(e)::QAB1(C)
      • S(n);N_GUARD::S(G),XS(n)
      • S(n);N_GUARD::S(G)
      • P(g);S_CUTR(e)::QAB1(C)
      • P(j);N_GUARD,S_CUTR(i)::S(G)
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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).