MESON Chess Problem Database

Problem Display
PID: 150961 (1B1n2Q1/2rrp2N/4p3/p4k1b/qb2R2K/pN5n/2Bp4/8 w - - 0 1)

Adabashev, Mark Ivanovich

Tambovskaya Pravda, 1930

1B1n2Q1/2rrp2N/4p3/p4k1b/qb2R2K/pN5n/2Bp4/8

#2

7 + 13

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Rf4#
    • 1...Rc4
      • 2.Rf4#
    • 1...Rc5
      • 2.Rf4#
    • 1...Rc6
      • 2.Rf4#
    • 1...Ra7
      • 2.Rd4#
      • 2.Rf4#
    • 1...Rb7
      • 2.Rd4#
      • 2.Rf4#
    • 1...Rc8
      • 2.Rf4#
    • 1...Rd4
      • 2.Sxd4#
    • 1...Bg4
      • 2.Qxg4#
    • 1...Bf7
      • 2.Qg4#
    • 1...Be8
      • 2.Qg4#
    • 1...Sg1
      • 2.Qg5#
    • 1...Sf2
      • 2.Qg5#
    • 1...Sf4
      • 2.Qg5#
    • 1...Sg5
      • 2.Qxg5#
    • 1...Sc6
      • 2.Qxe6#
    • 1...Sb7
      • 2.Qxe6#
  • Tries
    • 1.Rd4+?
      • 1...Ke5
        • 2.Qg7#
        • 2.Qh8#
      • 1...Rxc2!
    • 1.Rf4+?
      • 1...Kxf4
        • 2.Qg3#
      • 1...Ke5!
    • 1.Re5+?
      • 1...Kf4
        • 2.Qg3#
      • 1...Kxe5!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Re5#
      • 1...e5
        • 2.Rxe5#
      • 1...Rc4
        • 2.Rf4#
      • 1...Rd4
        • 2.Sxd4#
      • 1...Bc3
        • 2.Rd4#
      • 1...Bc5
        • 2.Rd4#
      • 1...Bd6
        • 2.Rc4#
      • 1...Sf4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • R(j);::B(A)+R(C),DCHECK
    • R(j);P_PINR(C)::B(A)+R(C),DCHECK
    • R(k);N_GUARD,P_PINR(C)::S(B),XR(k)
    • B(h);N_GUARD::QAB1(G),XB(h)
    • B(h);N_GUARD::QAB1(G)
    • S(c);N_GUARD::QAR1(G)
    • S(c);N_GUARD::QAR1(G),XS(c)
    • S(m);N_GUARD::QAB1(G),XP(i)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • R(j);XB(A)
    • Try
      • R(C);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINR(j),XR(C)::QAB1(G)
      • Refutation
        • K(g);P-FLIGHT,P_SPINR(j)
    • Try
      • R(C);CHECK
      • Vars
        • K(g);P-FLIGHT::QAB1(G)
      • Refutation
        • K(g);P-FLIGHT,P_SPINR(j),XR(C)
  • Actual
    • Q(G);
    • Threat
      • B(A)+R(C),DCHECK
    • Vars
      • P(i);::B(A)+R(C),DCHECK,XP(i)
      • R(j);P_PINR(C)::B(A)+R(C),DCHECK
      • R(k);N_GUARD,P_PINR(C)::S(B),XR(k)
      • B(e);P_PINR(C),S_CUTR(j)::B(A)+R(C)
      • B(e);P_PINR(C),S_CUTR(k)::B(A)+R(C)
      • S(c);N_GUARD::QAR1(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).