MESON Chess Problem Database

Problem Display
PID: 80252 (br3R2/4p3/4Bb1K/6N1/n2N1k2/r1n3p1/p2P2P1/B1Q5 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

The Field, 1944

(First published on Sat Mar 4 1944)

br3R2/4p3/4Bb1K/6N1/n2N1k2/r1n3p1/p2P2P1/B1Q5

#2

9 + 10

5752 200 Assorted Problems (Wenman) 1945
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Se2#
      • 2.Qc7#
    • 1...Sd1
      • 2.Se2#
      • 2.Qc7#
    • 1...Se2
      • 2.Sxe2#
      • 2.Qc7#
    • 1...Se4
      • 2.Se2#
    • 1...Sb5
      • 2.Se2#
    • 1...Sd5
      • 2.Se2#
  • Tries
    • 1.Se2+?
      • 1...Sxe2
        • 2.Qc7#
      • 1...Ke5!
    • 1.Sb3?
      • threat
        • 2.d4#
      • 1...Sb1
        • 2.Qc7#
      • 1...Sd1
        • 2.Qc7#
      • 1...Se2
        • 2.Qc7#
      • 1...Se4
        • 2.Sh3#
      • 1...Sd5
        • 2.Qf1#
        • 2.Qc4#
      • 1...Ke5!
    • 1.Sc6?
      • threat
        • 2.Qf1#
        • 2.dxc3#
        • 2.d3#
        • 2.d4#
      • 1...Bxc6
        • 2.d4#
      • 1...Rb2
        • 2.Qf1#
      • 1...Rd8
        • 2.Qf1#
        • 2.d3#
        • 2.d4#
      • 1...Sb1
        • 2.Be5#
        • 2.Qc4#
      • 1...Sd1
        • 2.Be5#
        • 2.Qc4#
      • 1...Se2
        • 2.Be5#
      • 1...Se4
        • 2.Sh3#
        • 2.Be5#
      • 1...Sb5
        • 2.Be5#
        • 2.d3#
      • 1...Sd5
        • 2.Be5#
        • 2.Qc4#
      • 1...Rb1!
    • 1.Qe1?
      • threat
        • 2.Sh3#
        • 2.Qe3#
      • 1...Bxg2
        • 2.Qe3#
      • 1...Se2
        • 2.Sxe2#
      • 1...Se4
        • 2.Se2#
      • 1...Sb1
        • 2.Se2#
        • 2.Sh3#
      • 1...Sd1
        • 2.Se2#
        • 2.Sh3#
      • 1...Sb5
        • 2.Se2#
        • 2.Sh3#
      • 1...Sd5
        • 2.Se2#
        • 2.Sh3#
        • 2.Qe4#
      • 1...Be4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.d4#
      • 1...Ke5
        • 2.d4#
      • 1...Sxb5
        • 2.d3#
      • 1...Sb1
        • 2.Qc7#
      • 1...Sd1
        • 2.Qc7#
      • 1...Se2
        • 2.Qc7#
      • 1...Se4
        • 2.Sh3#
      • 1...Sd5
        • 2.Qc4#

Anticipated by 21061(1916)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • S(c);OGATE,XS(E)::QAB(B)
      • Refutation
        • K(f);N_SPINB(g),P_SPINS(c),S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAB(B)+P(C)
      • Vars
        • S(c);OGATE::QAB(B)
        • S(c);SBLOCK::S(F)
      • Refutation
        • K(f);N_SPINB(g),P_SPINS(c),S_FLIGHT
    • Try
      • S(E);
      • Threat
        • DUALS(4)
      • Vars
        • B(i);XS(E)::QAB(B)+P(C)
        • R(j);::QAR(B)
        • S(c);OGATE::B(A)
      • Refutation
        • R(j);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);XP(D)::QAB1(B)
        • S(c);N_GUARD::S(E),XS(c)
        • S(c);N_GUARD::S(E)
      • Refutation
        • B(i);
  • Actual
    • S(E);
    • Threat
      • QAB(B)+P(C)
    • Vars
      • K(f);N_SPINB(g),P_SPINS(c),S_FLIGHT::P(C)
      • S(c);XS(E)::QAB(B)+P(C)
      • S(c);OGATE::QAB(B)
      • S(c);SBLOCK::S(F)
      • S(c);OGATE::QAR(B)
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