MESON Chess Problem Database

Problem Display
PID: 96869 (8/8/4N3/5Rp1/2P1p1P1/1PRpkP2/3p1N2/1q1Q1K2 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

200 Assorted Problems (Wenman), 1945

8/8/4N3/5Rp1/2P1p1P1/1PRpkP2/3p1N2/1q1Q1K2

#2

10 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Qe2#
    • 1...Qc2
      • 2.Qe2#
    • 1...Qxd1+
      • 2.Sxd1#
    • 1...Qb2
      • 2.Qe2#
    • 1...Qxb3
      • 2.Qe2#
    • 1...exf3
      • 2.Rxf3#
      • 2.Re5#
  • Tries
    • 1.Rxd3+?
      • 1...exd3
        • 2.Re5#
      • 1...Qxd3+!
    • 1.Rf4?
      • threat
        • 2.Rxe4#
      • 1...Qxd1+
        • 2.Sxd1#
      • 1...exf3
        • 2.Rxf3#
        • 2.Re4#
      • 1...gxf4!
  • Keys
    • 1.Sxd3!
      • 1...Qxd3+
        • 2.Qe2#
      • 1...Qxd1+
        • 2.Se1#
      • 1...Qxb3
        • 2.Qe2#
      • 1...exd3
        • 2.Re5#
      • 1...exf3
        • 2.Re5#
      • 1...Qa2
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Sdf4#
        • 2.Sdc5#
        • 2.Se5#
        • 2.Qe2#
      • 1...Qc2
        • 2.Qe2#
      • 1...Qa1
        • 2.Sb2#
      • 1...Qc1
        • 2.Sxc1#
      • 1...Qb2
        • 2.Sxb2#
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_PINQ(A)::QAR1(A)
    • Q(a);CHECK,XQ(A)::S(C),XQ(a)
    • Q(a);N_PINQ(A),XP(D)::QAR1(A)
  • Tries
    • Try
      • R(E);CHECK,XP(c)
      • Vars
        • P(e);S_CUTQ(a),XR(E)::R(I)
      • Refutation
        • Q(a);CHECK,N_PINQ(A),XR(E)
    • Try
      • R(I);
      • Threat
        • R1(I),XP(e)
      • Vars
        • Q(a);CHECK,XQ(A)::S(C),XQ(a)
      • Refutation
        • P(f);XR(I)
  • Actual
    • S(C);XP(c)
    • Vars
      • Q(a);CHECK,N_PINQ(A),P_SPINQ(a),XS(C)::QAR1(A)
      • Q(a);CHECK,N_GUARD,XQ(A)::R(E)+S(C)
      • Q(a);N_PINQ(A),XP(D)::QAR1(A)
      • P(e);OGATEB,P_SPINP(e),XS(C)::R(I)
      • P(e);OGATEB,XP(F)::R(I)
      • Q(a);N_PINQ(A)::QAR1(A)
      • Q(a);N_GUARD::R(E)+S(C)
      • Q(a);N_GUARD::R(E)+S(C),XQ(a)
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