MESON Chess Problem Database

Problem Display
PID: 16373 (8/p2R1N2/r2bP3/np1kP3/2q3Q1/6NK/B4B2/2R1n3 w - - 0 1)

Walters, S

Chess, 1940

8/p2R1N2/r2bP3/np1kP3/2q3Q1/6NK/B4B2/2R1n3

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qe4#
    • 1...Qxa2
      • 2.Rc5#
    • 1...Qb3
      • 2.Rc5#
    • 1...Sc6
      • 2.Rxd6#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.Qf5#
      • 1...Kc6
        • 2.Qe4#
      • 1...Sb3!
    • 1.Sd8?
      • threat
        • 2.Qd4#
        • 2.Qe4#
      • 1...Kxe5
        • 2.Qf5#
        • 2.Qg5#
      • 1...Sc2
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sc6
        • 2.Qe4#
      • 1...Sb3!
    • 1.Rd1+?
      • 1...Kc6
        • 2.Sd8#
        • 2.R1xd6#
      • 1...Sd3!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Sd8#
        • 2.Qe4#
        • 2.Qxd6#
      • 1...Kxe6!
    • 1.exd6?
      • threat
        • 2.Qe4#
      • 1...Kc6
        • 2.Qe4#
      • 1...Sb3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se7#
      • 1...Qb3+
        • 2.Se3#
      • 1...Kc6
        • 2.Qe4#
      • 1...Kxe6
        • 2.Se3#
      • 1...Sc6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINB(g),S_FLIGHT::QAB(F)
    • Q(b);N_SPINQ(b),OGATE,XB(B)::R1(A)
    • Q(b);OGATE,P_PINS(D)::R1(A)
    • S(c);S_CUTR(f)::R1(I),XB(g)
  • Tries
    • Try
      • S(J);
      • Threat
        • QAB1(F)
      • Vars
        • K(e);N_SPINB(g),N_SPINQ(b),OGATEB,P-FLIGHT,XP(G)::QAR1(F)
        • K(e);N_SPINB(g),S_FLIGHT::QAB(F)
      • Refutation
        • S(c);N_SPINQ(b)
    • Try
      • S(J);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(F)
        • S(c);::QAB1(F)
      • Refutation
        • S(c);N_SPINQ(b)
    • Try
      • R(A);CHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(e);N_SPINB(g),S_FLIGHT,XP(H)
    • Try
      • P(G);XB(g)
      • Threat
        • QAB1(F)
      • Vars
        • K(e);S_FLIGHT::QAB(F)
      • Refutation
        • S(c);N_SPINQ(b)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(b);CHECK::S(D)
      • K(e);N_SPINB(g),S_FLIGHT::QAB(F)
      • K(e);N_SPINB(g),S_FLIGHT,XP(H)::QAB(F)+S(D)
      • S(c);S_CUTR(f)::R1(I),XB(g)
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).