MESON Chess Problem Database

Problem Display
PID: 87554 (1n1RB3/5Q2/1q5p/p1Np3r/P1k1P1b1/1pPRBrn1/1K2pp2/8 w - - 0 1)

Ivanov, Serghei

Buletin Problemistic, 1973

1n1RB3/5Q2/1q5p/p1Np3r/P1k1P1b1/1pPRBrn1/1K2pp2/8

#2

10 + 13

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Bb5#
    • 1...Qc7
      • 2.Bb5#
    • 1...Qxd8
      • 2.Bb5#
    • 1...Qb5
      • 2.Bxb5#
    • 1...Qd6
      • 2.Bb5#
    • 1...Qe6
      • 2.Bb5#
    • 1...Qf6
      • 2.Bb5#
    • 1...Qg6
      • 2.Bb5#
    • 1...Rh1
      • 2.Qxd5#
    • 1...Rh2
      • 2.Qxd5#
    • 1...Rh3
      • 2.Qxd5#
    • 1...Rh4
      • 2.Qxd5#
    • 1...Bf5
      • 2.Qxd5#
    • 1...Sf5
      • 2.Qxd5#
  • Keys
    • 1.R8xd5!
      • threat
        • 2.R3d4#
      • 1...Qxc5
        • 2.R5d4#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Qf6
        • 2.Bb5#
      • 1...Sf5
        • 2.Rd6#
      • 1...Sc6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 12
  • Sets
    • Q(k);N_GUARD::B(J)
    • Q(k);N_GUARD,XR(I)::B(J)
    • Q(k);N_GUARD::B(J),XQ(k)
    • Q(k);N_GUARD,N_SPINP(i)::B(J)
    • Q(k);N_GUARD,P_PINP(B)::B(J)
    • R(j);N_GUARD::QAB1(H),XP(i)
    • B(g);S_CUTR(j)::QAB1(H),XP(i)
    • S(e);S_CUTR(j)::QAB1(H),XP(i)
  • Actual
    • R(I);XP(i)
    • Threat
      • R1(C)
    • Vars
      • Q(k);SBLOCK,XS(G)::QAB(H)+R(I),DCHECK
      • R(j);OGATE,P_SPINR(j),XR(I)::QAB1(H),XR(j)
      • Q(k);N_GUARD,P_PINP(B)::B(J)
      • S(e);S_CUTB(g),S_CUTR(d),S_CUTR(j)::QAB(H)+R(I)
      • S(m);S_CUTQ(k)::QAB(H)+R(I)
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).