MESON Chess Problem Database

Problem Display
PID: 203307 (2B2B1b/1r1P3K/1NP1kP1N/5p2/4b1p1/2Q1Rrq1/2n5/8 w - - 0 1)

Hertmann, Sandor

3rd Prize, Gyoeri Sakkoer, 1924

2B2B1b/1r1P3K/1NP1kP1N/5p2/4b1p1/2Q1Rrq1/2n5/8

#2

10 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb6
      • 2.d8Q#
      • 2.d8R#
    • 1...Rxd7+
      • 2.Bxd7#
    • 1...Rb8
      • 2.d8S#
    • 1...Bg7
      • 2.d8S#
    • 1...f4+
      • 2.Rxe4#
  • Tries
    • 1.Kg6?
      • threat
        • 2.d8S#
      • 1...f4+
        • 2.Rxe4#
      • 1...Rxb6
        • 2.d8Q#
        • 2.d8R#
      • 1...Rxd7
        • 2.Bxd7#
      • 1...Sd4!
    • 1.Be7?
      • threat
        • 2.d8S#
      • 1...f4+
        • 2.Rxe4#
      • 1...Rxb6
        • 2.d8Q#
        • 2.d8R#
      • 1...Rxd7
        • 2.Bxd7#
      • 1...Bxf6
        • 2.Qxf6#
      • 1...Sd4!
    • 1.Rxe4+?
      • 1...Qe5
        • 2.Qxe5#
      • 1...fxe4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qe7#
      • 1...f4+
        • 2.Qf5#
      • 1...Kxf6
        • 2.Qe7#
      • 1...Rxb6
        • 2.d8Q#
        • 2.d8B#
      • 1...Bxf6
        • 2.Qd5#
      • 1...Qd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(h);N_PINP(G),XS(C)::P=Q
    • R(h);CHECK,OGATE,P_SPINR(h),XP(G)::B(I),XR(h)
    • R(h);N_PINP(G)::P=S
    • B(i);N_PINP(G)::P=S
    • P(f);CHECK,N_GUARD,S_CUTQ(c)::R(B),XB(d)
  • Tries
    • Try
      • K(H);N_SPINP(G),S_FLIGHT
      • Threat
        • P=S
      • Vars
        • P(f);CHECK,N_GUARD,S_CUTQ(c)::R(B),XB(d)
        • R(h);N_GUARD,XS(C)::P=Q
        • R(h);OGATE,P_SPINR(h),XP(G)::B(I),XR(h)
      • Refutation
        • S(a);
    • Try
      • B(J);N_SPINP(G)
      • Threat
        • P=S
      • Vars
        • P(f);CHECK,N_GUARD,S_CUTQ(c)::R(B),XB(d)
        • R(h);N_GUARD,XS(C)::P=Q
        • R(h);OGATE,P_PINB(J),P_SPINR(h),XP(G)::B(I),XR(h)
        • B(i);OGATE,XP(E)::QAR1(A),XB(i)
      • Refutation
        • S(a);
    • Try
      • R(B);CHECK,XB(d)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(A),XQ(c)
      • Refutation
        • P(f);XR(B)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • P(f);CHECK,S_CUTR(b)::QAB1(A)
      • K(g);N_SPINB(d),P-FLIGHT,XP(E)::QAB1(A)
      • R(h);N_PINP(G),XS(C)::P=Q
      • B(i);SBLOCK,XP(E)::QAB1(A)
      • Q(c);N_GUARD::QAR1(A),XQ(c)
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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).