MESON Chess Problem Database

Problem Display
PID: 6215 (8/8/qB6/1P6/3PN3/R2Bk3/2P5/1N3R1K w - - 0 1)

Mansfield, Comins

Comm., The Australian Meredith Ty., 1928

8/8/qB6/1P6/3PN3/R2Bk3/2P5/1N3R1K

#2

10 + 2

3202 Complete Mansfield/I 1996
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qa8
      • 2.d5#
  • Tries
    • 1.Sbd2?
      • threat
        • 2.Sc4#
        • 2.Rf3#
      • 1...Qxb5
        • 2.Bxb5#
        • 2.Rf3#
      • 1...Qc8
        • 2.Bc4#
        • 2.Rf3#
      • 1...Qa4
        • 2.Rf3#
      • 1...Qxb6!
    • 1.Sbc3?
      • threat
        • 2.Sd1#
        • 2.Sd5#
      • 1...Qxb5
        • 2.Sd1#
      • 1...Qb7
        • 2.Sd1#
      • 1...Qa8
        • 2.Sd1#
        • 2.d5#
      • 1...Qxb6!
    • 1.Sd6?
      • threat
        • 2.Sc4#
        • 2.Sf5#
      • 1...Qa8+
        • 2.d5#
      • 1...Qxb5
        • 2.Bxb5#
      • 1...Qxb6
        • 2.Sf5#
      • 1...Qc8
        • 2.Bc4#
      • 1...Qa4
        • 2.Sf5#
      • 1...Qb7+!
    • 1.Bc4+?
      • 1...Kxe4
        • 2.Sd2#
      • 1...Qxa3!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Sf5#
      • 1...Qb7+
        • 2.Be4#
      • 1...Qa8+
        • 2.d5#
      • 1...Qxb5
        • 2.Bxb5#
      • 1...Qc8
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD,P_PINS(H)::B(J)+P(G)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);::R1(B)
      • Refutation
        • Q(b);XB(J)
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XP(I)::S(A)
        • Q(b);P_PINS(H)::S(A)
      • Refutation
        • Q(b);XB(J)
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK,N_GUARD::B(J)+P(G)
        • Q(b);OGATE,XP(I)::R(E)+B(F),XQ(b)
        • Q(b);XB(J)::S(H)
        • Q(b);N_GUARD::R(E)+B(F)
        • Q(b);::S(H)
      • Refutation
        • Q(b);CHECK
    • Try
      • B(F);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(H)::S(A)
      • Refutation
        • Q(b);XR(E)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • Q(b);CHECK,N_GUARD::R(E)+B(F)
      • Q(b);CHECK,N_GUARD::B(J)+P(G)
      • Q(b);OGATE,XP(I)::R(E)+B(F),XQ(b)
      • Q(b);N_GUARD::R(E)+B(F)
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