MESON Chess Problem Database

Problem Display
PID: 9848 (2q5/8/1nr5/p6p/2k3BR/r2R4/1Q1P1Bp1/3b2K1 w - - 0 1)

Mansfield, Comins

1st HM., BCPS Ring Ty., 1960

2q5/8/1nr5/p6p/2k3BR/r2R4/1Q1P1Bp1/3b2K1

#2

7 + 9

1189 The Tablet 1960
3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6
      • 2.Be2#
    • 1...Qb7
      • 2.Be2#
    • 1...Qa8
      • 2.Be2#
    • 1...Rxd3
      • 2.Be6#
    • 1...Rc5
      • 2.Rd4#
    • 1...Bc2
      • 2.Bf5#
    • 1...Ba4
      • 2.Bf5#
    • 1...Sd7
      • 2.Be2#
  • Tries
    • 1.Bxd1+?
      • 1...Kxd3
        • 2.Rd4#
        • 2.Qd4#
      • 1...Qg4!
    • 1.Bf3+?
      • 1...Kxd3
        • 2.Rd4#
      • 1...Qg4!
    • 1.Bxc8+?
      • 1...Bg4
        • 2.Ba6#
      • 1...Kxd3!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qb5#
      • 1...Kxd5
        • 2.Qd4#
      • 1...Sxd5
        • 2.Be2#
      • 1...Rb3
        • 2.Qd4#
      • 1...Bb3
        • 2.Be6#
        • 2.Qd4#
      • 1...Qa6
        • 2.Bf3#
      • 1...Rc5
        • 2.Rd4#
      • 1...Ba4
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(i);N_GUARD::R(G)+B(F)
    • R(c);SBLOCK,XR(E)::R(G)+B(F),DCHECK
    • R(h);SBLOCK::R1(E)
    • B(a);N_GUARD::R(G)+B(F)
    • S(g);S_CUTQ(i)::R(G)+B(F)
  • Tries
    • Try
      • B(F);CHECK,XB(a)
      • Refutation
        • Q(i);P_SPINQ(i)
    • Try
      • B(F);CHECK
      • Vars
        • K(d);S_FLIGHT,XR(E)::R1(G)
      • Refutation
        • Q(i);P_SPINQ(i)
    • Try
      • B(F);CHECK,XQ(i)
      • Vars
        • B(a);P_SPINB(a)::B(F)
      • Refutation
        • K(d);S_FLIGHT,XR(E)
  • Actual
    • R(E);
    • Threat
      • QAB1(B)
    • Vars
      • K(d);S_FLIGHT,XR(E)::QAR1(B)
      • S(g);SBLOCK,XR(E)::R(G)+B(F),DCHECK
      • R(c);SBLOCK::QAR1(B)
      • Q(i);N_GUARD::R(G)+B(F)
      • R(h);SBLOCK::R1(E)
      • B(a);N_GUARD::R(G)+B(F)
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