MESON Chess Problem Database

Problem Display
PID: 21599 (4RB2/3n4/2pr1p2/Rnrk1KpN/1Q1p4/p1p5/P1P5/8 w - - 0 1)

Mansfield, Comins

Brisbane Courier, 1920

4RB2/3n4/2pr1p2/Rnrk1KpN/1Q1p4/p1p5/P1P5/8

#2

8 + 11

3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qb3#
    • 1...Sc7
      • 2.Qb3#
    • 1...d3
      • 2.Qe4#
    • 1...g4
      • 2.Sf4#
  • Tries
    • 1.Sxf6+?
      • 1...Sxf6
        • 2.Re5#
      • 1...Rxf6+!
    • 1.Re6?
      • 1...Sxf8
        • 2.Sxf6#
      • 1...Rc4
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...Sa7
        • 2.Rxd6#
        • 2.Qb3#
      • 1...Sc7
        • 2.Rxd6#
        • 2.Qb3#
      • 1...Se5
        • 2.Sxf6#
      • 1...Sb6
        • 2.Sxf6#
      • 1...Sb8
        • 2.Sxf6#
      • 1...d3
        • 2.Qe4#
      • 1...g4
        • 2.Sf4#
      • 1...Rxe6!
  • Keys
    • 1.Rd8!
      • 1...Sxf8
        • 2.Sxf6#
      • 1...Re6
        • 2.Qxc5#
      • 1...Rc4
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qb3#
      • 1...Sc7
        • 2.Qb3#
      • 1...Se5
        • 2.Sxf6#
      • 1...Sb6
        • 2.Sxf6#
      • 1...Sb8
        • 2.Sxf6#
      • 1...d3
        • 2.Qe4#
      • 1...g4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(e);OGATE,P_SPINS(d),SBLOCK::QAR1(C),XR(i)
    • S(d);P_SPINR(e)::QAB(C)
    • P(c);OGATE::QAB1(C)
    • P(g);N_GUARD::S(F)
  • Tries
    • Try
      • S(F);CHECK,XP(j)
      • Vars
        • S(k);XS(F)::R1(G)
      • Refutation
        • R(i);CHECK,XS(F)
    • Try
      • R(G);
      • Vars
        • S(k);N_GUARD,XB(H)::S(F),XP(j)
        • S(k);N_GUARD::S(F),XP(j)
        • P(c);OGATE::QAB1(C)
        • P(g);N_GUARD::S(F)
      • Refutation
        • R(i);XR(G)
  • Actual
    • R(G);
    • Vars
      • S(k);N_GUARD,P_SPINR(i),XB(H)::S(F),XP(j)
      • R(i);P_SPINS(k)::QAR1(C),XR(e)
      • R(e);OGATE,P_SPINS(d),SBLOCK::QAR1(C),XR(i)
      • S(d);P_SPINR(e)::QAB(C)
      • S(k);N_GUARD,P_SPINR(i)::S(F),XP(j)
      • P(c);OGATE::QAB1(C)
      • P(g);N_GUARD::S(F)
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