MESON Chess Problem Database

Problem Display
PID: 18328 (3r4/3R3Q/B5RB/8/8/3N4/1PN2n2/K2k2r1 w - - 0 1)

Wilson, Francis Vaux

2nd Prize, American Chess Bulletin, 1955

3r4/3R3Q/B5RB/8/8/3N4/1PN2n2/K2k2r1

#2

9 + 4

81 Chess 1956
3105 FIDE Album (1945-1955) 1964
133 The Problemist Supplement 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Sc1+?
      • 1...Kxc2
        • 2.Rg2#
        • 2.Rc6#
      • 1...Rxd7
        • 2.Rxg1#
      • 1...Sd3!
    • 1.Sdb4+?
      • 1...Rxd7
        • 2.Rxg1#
      • 1...Sd3!
    • 1.Rxg1+?
      • 1...Ke2
        • 2.Sd4#
      • 1...Kxc2!
    • 1.Rg3?
      • threat
        • 2.Sxf2#
      • 1...Kxc2+
        • 2.Se1#
      • 1...Ke2+
        • 2.Sc1#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Sh1
        • 2.Sf2#
      • 1...Sh3
        • 2.Sf2#
      • 1...Sg4
        • 2.Sf2#
      • 1...Se4!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Sxf2#
      • 1...Kxc2+
        • 2.Sc1#
      • 1...Ke2+
        • 2.Sde1#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Sh1
        • 2.Se3#
        • 2.Sf2#
        • 2.Rd2#
      • 1...Sh3
        • 2.Se3#
        • 2.Sf2#
        • 2.Rd2#
      • 1...Se4
        • 2.Se3#
      • 1...Sg4
        • 2.Sf2#
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • R(d);XR(H)::R(F),XR(b)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • S(D);CHECK
      • Vars
        • R(d);XR(H)::R(F),XR(b)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • R(F);CHECK,XR(b)
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • R(F);
      • Threat
        • R(H)+S(D),DCHECK,XS(c)
      • Vars
        • K(a);CHECK,S_FLIGHT,XS(C)::QAB(I)+S(D),DCHECK
        • K(a);CHECK,S_FLIGHT::B(E)+S(D),DCHECK
        • S(c);OGATE,P_SPINS(c),XS(D)::QAR2(I),XS(c)
        • S(c);::R(H)+S(D),DCHECK
      • Refutation
        • S(c);
  • Actual
    • R(F);
    • Threat
      • R(H)+S(D),DCHECK,XS(c)
    • Vars
      • K(a);CHECK,P_SPINS(c),S_FLIGHT,XS(C)::QAB(I)+S(D)
      • K(a);CHECK,P_SPINS(c),S_FLIGHT::B(E)+S(D)
      • S(c);OGATE,P_SPINS(c),XS(D)::QAR2(I),XS(c)
      • S(c);::S(C)
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