MESON Chess Problem Database

Problem Display
PID: 54627 (6Q1/1K6/1P1Np3/2Pk1p2/3P3R/7r/6Nb/6B1 w - - 0 1)

Mansfield, Comins

3rd HM., Shakhmaty, 1971

6Q1/1K6/1P1Np3/2Pk1p2/3P3R/7r/6Nb/6B1

#2

9 + 5

4054 Complete Mansfield/III 1999
15513 Selected Chess Problems of Colin Sydenham 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sxe3#
    • 1...Rg3
      • 2.Sf4#
    • 1...Bg3
      • 2.Se3#
    • 1...Bf4
      • 2.Sxf4#
  • Tries
    • 1.Qc8?
      • threat
        • 2.Qc6#
      • 1...e5
        • 2.Qg8#
      • 1...Bxd6!
    • 1.Qe8?
      • threat
        • 2.Qc6#
      • 1...e5
        • 2.Qf7#
        • 2.Qg8#
      • 1...Bxd6!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Se3#
        • 2.Sf4#
      • 1...Rxg3
        • 2.Sf4#
      • 1...Rxh4
        • 2.Qb3#
      • 1...Bxg1
        • 2.Qe5#
      • 1...Bxg3
        • 2.Se3#
      • 1...e5
        • 2.Qg8#
      • 1...f4
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::S(B),XR(b)
    • R(b);S_CUTB(a)::S(B)
    • B(a);S_CUTR(b)::S(B)
    • B(a);N_GUARD::S(B),XB(a)
  • Tries
    • Try
      • Q(I);N_PINP(e)
      • Threat
        • QAB1(I)
      • Vars
        • P(e);OGATEB::QAB(I)
      • Refutation
        • B(a);XS(G)
    • Try
      • Q(I);N_PINP(e)
      • Threat
        • QAB1(I)
      • Refutation
        • B(a);XS(G)
  • Actual
    • Q(I);N_PINP(e)
    • Threat
      • DUALS(2)
    • Vars
      • R(b);XQ(I)::S(B)
      • R(b);N_GUARD,XR(D)::QAB(I)
      • B(a);N_GUARD,XB(A)::QAR1(I)
      • B(a);XQ(I)::S(B)
      • P(e);OGATEB::QAB(I)
      • P(d);::S(B),XP(d)
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