MESON Chess Problem Database

Problem Display
PID: 198201 (4bRR1/6r1/2P1p2r/pN1Pk1B1/5p2/1p2pB2/qN4Kb/Q4n1n w - - 0 1)

Novejarque Iranzo, Francisco

3rd Prize, Spanish National Ty., 1920

4bRR1/6r1/2P1p2r/pN1Pk1B1/5p2/1p2pB2/qN4Kb/Q4n1n

#2

10 + 13

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sd3#
      • 2.Sc4#
    • 1...Qxa1
      • 2.Sd3#
      • 2.Sc4#
    • 1...Qxb2+
      • 2.Qxb2#
    • 1...Qa3
      • 2.Sd3#
      • 2.Sc4#
    • 1...Qa4
      • 2.Sd3#
      • 2.Sc4#
    • 1...Rxg5+
      • 2.Rxg5#
    • 1...Sd2
      • 2.Sd3#
      • 2.Sc4#
    • 1...Sfg3
      • 2.Bxf4#
    • 1...Sf2
      • 2.Sd3#
      • 2.Sc4#
    • 1...Shg3
      • 2.Bxf4#
    • 1...e2
      • 2.Sd3#
      • 2.Sc4#
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qe4#
      • 1...Qxb2+
        • 2.Qxb2#
      • 1...Rxg5+
        • 2.Rxg5#
      • 1...Qxb1
        • 2.Sc4#
      • 1...exd5
        • 2.Qf5#
      • 1...Qa4
        • 2.Sd3#
      • 1...Bg6
        • 2.Bf6#
      • 1...Sd2
        • 2.Sd3#
      • 1...Sfg3
        • 2.Bxf4#
      • 1...Sf2
        • 2.Sc4#
      • 1...Shg3
        • 2.Bxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,OGATE,P_SPINQ(c),XS(B)::QAB(A),XQ(c)
    • R(l);CHECK,OGATE,XB(G)::R(J),XR(l)
    • S(a);N_PINB(G)::B(G),XP(g)
    • S(b);N_PINB(G)::B(G),XP(g)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • Q(c);CHECK,OGATE,XS(B)::QAB(A),XQ(c)
      • R(l);CHECK,OGATE,XB(G)::R(J),XR(l)
      • Q(c);N_PINS(B),XQ(A)::S(B)
      • P(j);N_GUARD,XP(F)::QAR1(A)
      • Q(c);N_PINS(B)::S(B)
      • B(m);N_PINB(G)::B(G)
      • S(a);N_PINS(B)::S(B)
      • S(a);N_PINB(G)::B(G),XP(g)
      • S(b);N_PINS(B)::S(B)
      • S(b);N_PINB(G)::B(G),XP(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).