MESON Chess Problem Database

Problem Display
PID: 56044 (2n5/5K2/NP1b4/PP1k1p2/2N5/nQ3P2/4p3/1B1r2B1 w - - 0 1)

Mansfield, Comins

Comm., 64 Shakhmatnoe obozrenie, 1980

2n5/5K2/NP1b4/PP1k1p2/2N5/nQ3P2/4p3/1B1r2B1

#2

10 + 7

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb1
      • 2.Qd3#
    • 1...Rc1
      • 2.Qd3#
    • 1...Re1
      • 2.Qd3#
    • 1...Rf1
      • 2.Qd3#
    • 1...Rxg1
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Bh2
      • 2.Sb4#
    • 1...Bg3
      • 2.Sb4#
    • 1...Bb4
      • 2.Sxb4#
      • 2.Sc7#
    • 1...Bf4
      • 2.Sb4#
    • 1...Bc5
      • 2.Sc7#
    • 1...Be5
      • 2.Sb4#
    • 1...Bc7
      • 2.Sb4#
      • 2.Sxc7#
    • 1...Be7
      • 2.Sc7#
    • 1...Bb8
      • 2.Sb4#
    • 1...Bf8
      • 2.Sc7#
    • 1...f4
      • 2.Be4#
  • Tries
    • 1.Se3+?
      • 1...Kd4
        • 2.Qb2#
      • 1...Ke5!
  • Keys
    • 1.f4!
      • threat
        • 2.Sxa3#
      • 1...Rxb1
        • 2.Qd3#
      • 1...Rxg1
        • 2.Qd3#
      • 1...Bxf4
        • 2.Sb4#
      • 1...Sxb1
        • 2.Sd2#
      • 1...Sxc4
        • 2.Qf3#
      • 1...Sxb5
        • 2.Se5#
      • 1...Sxb6
        • 2.Sxb6#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Sc2
        • 2.Sd2#
      • 1...Rc1
        • 2.Qd3#
      • 1...Rd4
        • 2.Se3#
      • 1...Bb4
        • 2.Sxb4#
        • 2.Sc7#
      • 1...Bc5
        • 2.Sc7#
      • 1...Be5
        • 2.Sb4#
      • 1...Bc7
        • 2.Sb4#
        • 2.Sxc7#
      • 1...Be7
        • 2.Sc7#
      • 1...Bb8
        • 2.Sb4#
      • 1...Bf8
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD,XB(A)::QAR2(C)
    • R(a);N_GUARD::QAR2(C)
    • R(a);N_GUARD,XB(B)::QAR2(C)
    • R(a);N_GUARD::QAR2(C),XR(a)
    • B(f);N_GUARD::S(H)
    • P(e);N_GUARD::B(A)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAB(C)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • P(D);
    • Threat
      • QAB(C)+S(E),XS(c)
    • Vars
      • R(a);N_GUARD,XB(A)::QAR2(C)
      • R(a);N_GUARD,XB(B)::QAR2(C)
      • B(f);N_GUARD,XP(D)::S(H)
      • S(c);N_GUARD,XB(A)::QAB(C)+S(E)
      • S(c);P_SPINS(c),SBLOCK,XS(E)::QAB(C)
      • S(c);N_GUARD,XP(G)::QAB(C)+S(E)
      • S(g);XP(I)::QAB(C)+S(E),DCHECK,XS(g)
      • R(a);N_GUARD::QAR2(C),XR(a)
      • S(c);N_GUARD::QAB(C)+S(E)
      • R(a);N_GUARD::QAR2(C)
      • R(a);SBLOCK::QAB(C)+S(E),DCHECK
      • B(f);N_GUARD::S(H)
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