MESON Chess Problem Database

Problem Display
PID: 84591 (4R2b/3N3b/2n5/2B1P3/2n1k1BR/1Q1pp1PK/2p5/qN6 w - - 0 1)

Szwedowski, Leopold Mieczyslaw

The Hindu, 1960

4R2b/3N3b/2n5/2B1P3/2n1k1BR/1Q1pp1PK/2p5/qN6

#2

10 + 9

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Be6#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qxe5
      • 2.Sc3#
    • 1...Qa2
      • 2.Sc3#
    • 1...Qa3
      • 2.Sc3#
    • 1...Qa4
      • 2.Sc3#
    • 1...Qa6
      • 2.Sc3#
    • 1...Qa7
      • 2.Sc3#
    • 1...Qa8
      • 2.Sc3#
    • 1...Bxe5
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sxe5
      • 2.Qb7#
  • Tries
    • 1.Bd1+?
      • 1...Kd5
        • 2.Qxc4#
      • 1...Kf5!
    • 1.Be2+?
      • 1...Kd5
        • 2.Qxc4#
      • 1...Kf5!
    • 1.Bh5+?
      • 1...Kd5
        • 2.Bf7#
        • 2.Qxc4#
      • 1...Kf5!
    • 1.Qxc4+?
      • 1...Qd4
        • 2.Sc3#
      • 1...Sd4!
  • Keys
    • 1.Kg2!
      • threat
        • 2.Be6#
      • 1...Kd5
        • 2.Be6#
      • 1...Qxe5
        • 2.Sc3#
      • 1...Bxe5
        • 2.Sf6#
      • 1...S4xe5
        • 2.Bh3#
      • 1...S6xe5
        • 2.Qb7#
      • 1...Bf5
        • 2.Bf3#
      • 1...Bf6
        • 2.Sxf6#

Anticipated by 187337(1935)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • K(f);P_SPINS(e),S_FLIGHT::B(E)
    • Q(a);N_GUARD::S(A),XQ(a)
    • Q(a);N_GUARD,P_SPINQ(a),XP(H)::S(A)
    • Q(a);N_GUARD::S(A)
    • B(i);N_GUARD,P_SPINB(i),XP(H)::S(I)
    • B(i);N_GUARD::S(I),XB(i)
    • S(e);S_CUTQ(a)::S(A)
    • S(g);OGATEB,P_SPINS(g),XP(H)::QAB(B)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(f);P_SPINS(e),S_FLIGHT::QAB1(B),XS(e)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(f);P_SPINS(e),S_FLIGHT::QAB1(B),XS(e)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • B(E);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(B);CHECK,XS(e)
      • Vars
        • Q(a);P_SPINQ(a)::S(A)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • R(F)+B(E)
    • Vars
      • K(f);P_SPINS(e),S_FLIGHT::B(E)
      • Q(a);N_GUARD,P_SPINQ(a),XP(H)::S(A)
      • B(i);N_GUARD,P_SPINB(i),XP(H)::S(I)
      • S(e);P_SPINS(e),XP(H)::R(F)+B(E)
      • S(g);OGATEB,P_SPINS(g),XP(H)::QAB(B)
      • B(h);SBLOCK::R(F)+B(E),DCHECK
      • B(i);N_GUARD::S(I),XB(i)
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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).