MESON Chess Problem Database

Problem Display
PID: 12 (b3R3/B2Q2K1/8/4N3/5p2/1r3P2/1pBPk3/3R4 w - - 0 1)

Mansfield, Comins

1st HM., L'Italia Scacchistica, 1930/I

b3R3/B2Q2K1/8/4N3/5p2/1r3P2/1pBPk3/3R4

#2

9 + 5

3202 Complete Mansfield/I 1996
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qxd3#
    • 1...Rb4
      • 2.Qd3#
    • 1...Rb5
      • 2.Qxb5#
      • 2.Qd3#
    • 1...Rb8
      • 2.Qd3#
  • Tries
    • 1.Sd3+?
      • 1...Kxf3
        • 2.Qh3#
      • 1...Be4!
    • 1.Sc6+?
      • 1...Kxf3
        • 2.Qh3#
      • 1...Re3!
    • 1.Qh3?
      • threat
        • 2.Qf1#
        • 2.Qg2#
        • 2.Qh2#
      • 1...Rb7+
        • 2.Sd7#
      • 1...Bxf3
        • 2.Qf1#
      • 1...Rxf3!
    • 1.Qb5+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...Rxb5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qg2#
      • 1...Rb7+
        • 2.Sd7#
      • 1...Rxf3
        • 2.Sc6#
      • 1...Bxf3
        • 2.Sd3#

This anticipates 96841(1945)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::QAB1(G),XR(c)
    • R(c);N_GUARD::QAB1(G)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(D)::QAR2(G)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(D)::QAR2(G)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);CHECK,N_GUARD,S_CUTB(e)::R(I)+S(E)
        • B(e);XP(D)::QAB1(G)
      • Refutation
        • R(c);XP(D)
    • Try
      • Q(G);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(G),XR(c)
      • Refutation
        • R(c);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR2(G)
    • Vars
      • R(c);CHECK,N_GUARD,S_CUTB(e)::R(I)+S(E)
      • R(c);N_GUARD,P_SPINR(c),XP(D)::R(I)+S(E)
      • B(e);N_GUARD,P_SPINB(e),XP(D)::R(I)+S(E)
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