Problem Display
PID: 17407 (2R5/7K/1p6/1P1k1pN1/2NP1n1R/1pp4p/7b/1B1Q3q w - - 0 1)

Suesman, Walter B

2nd Prize, Oakhurst Home News, 1946

2R5/7K/1p6/1P1k1pN1/2NP1n1R/1pp4p/7b/1B1Q3q

#2

9 + 9


14773 The Best American Chess Problems of 1946 1948

SOLUTION


  • SOUND
  • Sets
    • 1...Se2
      • 2.Qxh1#
    • 1...Sg2
      • 2.Qf3#
    • 1...Sd3
      • 2.Qxh1#
    • 1...Sh5
      • 2.Qxh1#
    • 1...Se6
      • 2.Qxh1#
    • 1...Sg6
      • 2.Qxh1#
  • Tries
    • 1.Rc6?
      • threat
        • 2.Se3#
        • 2.Sxb6#
      • 1...Qf3
        • 2.Sxb6#
      • 1...Qe4
        • 2.Sxb6#
      • 1...Qe1
        • 2.Sxb6#
      • 1...Qg1
        • 2.Sxb6#
      • 1...Bg1
        • 2.Sxb6#
      • 1...Sg2
        • 2.Sxb6#
        • 2.Qf3#
      • 1...Qxd1!
    • 1.Qe2?
      • threat
        • 2.Rd8#
        • 2.Qe5#
      • 1...Kxd4
        • 2.Qd3#
        • 2.Qe5#
      • 1...Qe4
        • 2.Rd8#
      • 1...Qe1
        • 2.Rd8#
      • 1...Sg2
        • 2.Qf3#
        • 2.Qe6#
      • 1...Sd3
        • 2.Qe6#
      • 1...Sh5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sg6
        • 2.Qe6#
      • 1...Sxe2!
    • 1.Qf3+?
      • 1...Kxd4
        • 2.Se6#
        • 2.Qd3#
      • 1...Qxf3!
    • 1.Qf1?
      • threat
        • 2.Rd8#
      • 1...Kxd4
        • 2.Qd3#
      • 1...Se2
        • 2.Qxh1#
      • 1...Sg2
        • 2.Qf3#
      • 1...Sd3
        • 2.Qxh1#
      • 1...Sh5
        • 2.Qxh1#
      • 1...Se6
        • 2.Qxh1#
      • 1...Sg6
        • 2.Qxh1#
      • 1...Qxf1!
    • 1.Qxh1+?
      • 1...Kxd4
        • 2.Se6#
        • 2.Qd1#
      • 1...Sg2!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Rd8#
      • 1...Kxd4
        • 2.Bf1#
      • 1...Sxd3
        • 2.Qxh1#
      • 1...Se2
        • 2.Qxh1#
      • 1...Sg2
        • 2.Qf3#
      • 1...Sh5
        • 2.Qxh1#
      • 1...Se6
        • 2.Qxh1#
      • 1...Sg6
        • 2.Qxh1#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::QAB(B),XQ(a)
    • S(f);S_CUTQ(a)::QAB(B)
  • Tries
    • Try
      • R(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::S(C),XP(i)
        • B(b);::S(C),XP(i)
      • Refutation
        • Q(a);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::R(I)
        • S(f);N_GUARD::QAB1(B)
        • S(f);N_GUARD::QAB1(B),XS(f)
      • Refutation
        • S(f);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • Q(a);XQ(B)
    • Try
      • Q(B);
      • Threat
        • R(I)
      • Vars
        • K(g);OGATEB,P-FLIGHT,P_SPINS(f),XP(D)::QAR1(B)
        • S(f);N_GUARD::QAB(B),XQ(a)
        • S(f);S_CUTQ(a)::QAB(B)
      • Refutation
        • Q(a);XQ(B)
    • Try
      • Q(B);CHECK,XQ(a)
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • B(A);
    • Threat
      • R(I)
    • Vars
      • K(g);OGATEB,P-FLIGHT,P_SPINS(f),XP(D)::QAR(B)+B(A)
      • S(f);N_GUARD,XB(A)::QAB(B),XQ(a)
      • S(f);N_GUARD::QAB(B),XQ(a)
      • S(f);S_CUTQ(a)::QAB(B)


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).