Problem Display
PID: 16919 (2K5/8/6B1/5P2/8/N2k1pNb/nQ1P4/6Rr w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

The Field, 1942

(First published on Sat Feb 7 1942)

2K5/8/6B1/5P2/8/N2k1pNb/nQ1P4/6Rr

#2

8 + 5


419 One Hundred Published Problems 1944

SOLUTION


  • SOUND
  • Sets
    • 1...Bf1
      • 2.f6#
    • 1...Bg2
      • 2.f6#
    • 1...Bxf5+
      • 2.Bxf5#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sb4
      • 2.Qc3#
  • Tries
    • 1.Bf7?
      • threat
        • 2.Bc4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Bxf5+!
    • 1.Be8?
      • threat
        • 2.Bb5#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Bxf5+!
    • 1.Re1?
      • threat
        • 2.Re3#
      • 1...Bxf5+
        • 2.Bxf5#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Rxe1!
    • 1.Qe5?
      • threat
        • 2.Qd6#
        • 2.Qe3#
        • 2.Qd5#
      • 1...Kxd2
        • 2.Qd4#
      • 1...Sc3
        • 2.Qxc3#
        • 2.Qe3#
      • 1...Sb4
        • 2.Qc3#
        • 2.Qe3#
      • 1...Bxf5+!
    • 1.Qf6?
      • threat
        • 2.Qd8#
        • 2.Qd6#
      • 1...Kxd2
        • 2.Qd4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...Bxf5+!
    • 1.Qh8?
      • threat
        • 2.Qd8#
      • 1...Kxd2
        • 2.Qd4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...Bxf5+!
    • 1.Qb3+?
      • 1...Kxd2
        • 2.Sb1#
        • 2.Sc4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Kd4!
    • 1.Qb4?
      • threat
        • 2.Qd6#
      • 1...Bxf5+
        • 2.Bxf5#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sxb4!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Sc2#
      • 1...Kxd2!
    • 1.Qb6?
      • threat
        • 2.Qe3#
        • 2.Qd8#
        • 2.Qd6#
      • 1...Kxd2
        • 2.Qd4#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sb4
        • 2.Qe3#
      • 1...Bxf5+!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qd7#
      • 1...Kxd2
        • 2.Qd4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(e);N_PINP(F)::B(G)+P(F)
    • B(e);CHECK,OGATE,P_SPINB(e),XP(F)::B(G),XB(e)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
  • Tries
    • Try
      • B(G);
      • Threat
        • B(G)
      • Vars
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • B(e);CHECK,XP(F)
    • Try
      • B(G);
      • Threat
        • B(G)
      • Vars
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • B(e);CHECK,XP(F)
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • B(e);CHECK,OGATE,P_SPINB(e),XP(F)::B(G),XB(e)
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • R(a);XR(A)
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • K(c);P-FLIGHT,XP(C)::QAR2(B)
      • Refutation
        • B(e);CHECK,P_SPINB(e),XP(F)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT,XP(C)::QAR2(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • B(e);CHECK,P_SPINB(e),XP(F)
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • K(c);P-FLIGHT,XP(C)::QAR2(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • B(e);CHECK,P_SPINB(e),XP(F)
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(B),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • B(e);CHECK,OGATE,P_SPINB(e),XP(F)::B(G),XB(e)
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • S(b);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::S(D)
      • Refutation
        • K(c);P-FLIGHT,XP(C)
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • K(c);P-FLIGHT,XP(C)::QAR2(B)
        • S(b);::QAR1(B)
      • Refutation
        • B(e);CHECK,P_SPINB(e),XP(F)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(c);P-FLIGHT,XP(C)::QAR2(B)
      • S(b);N_GUARD::QAR1(B),XS(b)
      • S(b);N_GUARD::QAR1(B)


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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).