MESON Chess Problem Database

Problem Display
PID: 6386 (8/5qr1/5Rp1/1Q6/2NR4/1K2pN1B/P3kb2/8 w - - 0 1)

Mansfield, Comins

Comm., Cincinnati Enquirer, 1929

8/5qr1/5Rp1/1Q6/2NR4/1K2pN1B/P3kb2/8

#2

8 + 6

3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4+
      • 2.Qxc4#
    • 1...Qxf6
      • 2.Sce5#
    • 1...Qa7
      • 2.Sb2#
      • 2.Sa3#
      • 2.Sa5#
      • 2.Sce5#
      • 2.Sb6#
      • 2.Sd6#
    • 1...Qb7
      • 2.Sb6#
    • 1...Qe7
      • 2.Sb2#
      • 2.Sa3#
      • 2.Sa5#
      • 2.Sce5#
      • 2.Sb6#
      • 2.Sd6#
    • 1...Qf8
      • 2.Sb2#
      • 2.Sa3#
      • 2.Sa5#
      • 2.Sce5#
      • 2.Sb6#
      • 2.Sd6#
    • 1...Be1
      • 2.Sg1#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qb2#
      • 1...Qxc4+
        • 2.Qxc4#
      • 1...Qxf6
        • 2.Sce5#
      • 1...Qb7
        • 2.Sb6#
      • 1...Be1+!
    • 1.Sg1+?
      • 1...Ke1
        • 2.Qb4#
        • 2.Qa5#
      • 1...Bxg1!
  • Keys
    • 1.Ka3!
      • threat
        • 2.Qb2#
      • 1...Qa7+
        • 2.Sa5#
      • 1...Qe7+
        • 2.Sd6#
      • 1...Qf8+
        • 2.Sd6#
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Qxf6
        • 2.Sce5#
      • 1...Be1
        • 2.Sg1#
      • 1...Qb7
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(e);CHECK,OGATE,P_SPINQ(e),XS(E)::QAB(G),XQ(e)
    • Q(e);N_PINS(E),XR(H)::QAB(G)+S(E)
    • Q(e);N_PINS(E),P_PINQ(G)::QAB(G)+S(E)
    • B(b);N_GUARD,SBLOCK::S(C)
  • Tries
    • Try
      • K(B);N_SPINS(E),P-FLIGHT
      • Threat
        • QAR(G)
      • Vars
        • Q(e);CHECK,OGATE,P_SPINQ(e),XS(E)::QAB(G),XQ(e)
        • Q(e);N_GUARD,P_PINR(F),XR(H)::QAB(G)+S(E)
        • Q(e);N_GUARD::QAB(G)+S(E)
      • Refutation
        • B(b);CHECK
    • Try
      • S(C);CHECK
      • Refutation
        • B(b);XS(C)
  • Actual
    • K(B);N_SPINS(E),P-FLIGHT
    • Threat
      • QAR(G)
    • Vars
      • Q(e);CHECK,N_GUARD::QAB(G)+S(E)
      • Q(e);OGATE,P_SPINQ(e),XS(E)::QAB(G),XQ(e)
      • Q(e);N_GUARD,XR(H)::QAB(G)+S(E)
      • B(b);N_GUARD,SBLOCK::S(C)
      • Q(e);N_GUARD::QAB(G)+S(E)
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