MESON Chess Problem Database

Problem Display
PID: 108 (1KB5/1Q6/4N2r/5kP1/2n2N1P/2B2p1P/4r3/8 w - - 0 1)

Mansfield, Comins

1st Prize, Skakbladet, 1930

1KB5/1Q6/4N2r/5kP1/2n2N1P/2B2p1P/4r3/8

#2

9 + 5

35 L'Italia Scacchistica 1930
3098 FIDE Album (1914-1944) (I) 1971
102 Probleemblad 1974
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rh7
      • 2.Qxh7#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Se7#
      • 1...Kxg6
        • 2.Sf4#
      • 1...Rxe6
        • 2.Qb1#
      • 1...Rxg6
        • 2.Qxf3#
      • 1...Rh7!
    • 1.Sc5+?
      • 1...Ree6
        • 2.Qe4#
      • 1...Rhe6
        • 2.Qf7#
      • 1...Kxf4!
    • 1.Qb1+?
      • 1...Rc2
        • 2.Qxc2#
      • 1...Re4!
    • 1.Qh7+?
      • 1...Rg6
        • 2.Qxg6#
      • 1...Rxh7!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Se7#
      • 1...Ke4
        • 2.Sc5#
      • 1...Kg6
        • 2.Sef4#
      • 1...Rexe6
        • 2.Qb1#
      • 1...Rhxe6
        • 2.Qh7#
      • 1...Rh7
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::QAB(G),XR(e)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(d);S_FLIGHT,XS(C)::S(F)
        • R(a);N_GUARD,P_SPINR(a),XS(F)::QAB(G)
        • R(e);SBLOCK,XS(C)::QAR2(G),XP(b)
      • Refutation
        • R(e);
    • Try
      • S(F);CHECK
      • Vars
        • R(a);P_SPINR(a)::QAB1(G)
        • R(e);P_SPINR(e)::QAR2(G)
      • Refutation
        • K(d);P-FLIGHT,XS(C)
    • Try
      • Q(G);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB(G),XR(a)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • Q(G);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB1(G),XR(e)
      • Refutation
        • R(e);XQ(G)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(d);S_FLIGHT::S(F)
      • R(a);N_GUARD,P_SPINR(a),XS(F)::QAB(G)
      • R(e);N_GUARD,P_SPINR(e),XS(F)::QAB(G)
      • R(e);N_GUARD::QAB(G),XR(e)
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