MESON Chess Problem Database

Problem Display
PID: 21032 (RBk5/3N4/P4K2/Qn2N3/8/1r5B/1rq5/2R4b w - - 0 1)

Mansfield, Comins

2nd Prize=, Hampshire Telegraph and Post, 1915

RBk5/3N4/P4K2/Qn2N3/8/1r5B/1rq5/2R4b

#2

9 + 6

3360 Simple Two-move Themes 1924
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sf8#
    • 1...Qc6+
      • 2.Bd6#
    • 1...Sc3
      • 2.Qc7#
  • Tries
    • 1.Sc5+?
      • 1...Qf5+
        • 2.Bxf5#
      • 1...Rxh3!
    • 1.Rxc2+?
      • 1...Rc3
        • 2.Sf8#
      • 1...Bc6
        • 2.Bd6#
        • 2.Ba7#
      • 1...Sc3
        • 2.Sc5#
        • 2.Sf8#
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Rxc2!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sb6#
        • 2.Qd8#
      • 1...Qc3+
        • 2.Sde5#
      • 1...Qc6+
        • 2.Bd6#
      • 1...Rf3+
        • 2.Bf4#
      • 1...Bxa8
        • 2.Qd8#
      • 1...Qc7
        • 2.Sb6#
      • 1...Sc7
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(c);P_PINS(D),S_CUTR(d)::B(B)+S(G)
    • Q(c);CHECK,S_CUTB(a)::R(H)+B(I)
    • S(e);N_GUARD,N_SPINQ(c),S_CUTQ(c)::QAR1(C)
  • Tries
    • Try
      • S(G);CHECK,N_PINQ(c)
      • Vars
        • Q(c);CHECK,N_GUARD,P_SPINQ(c)::B(B),XQ(c)
      • Refutation
        • R(d);XB(B)
    • Try
      • R(A);CHECK,XQ(c)
      • Vars
        • R(d);P_SPINR(d)::B(B)+S(G)
        • S(e);N_GUARD,P_SPINS(e)::QAR1(C),XS(e)
      • Refutation
        • R(b);XR(A)
  • Actual
    • S(D);
    • Threat
      • DUALS(2)
    • Vars
      • Q(c);CHECK,S_CUTR(d)::B(B)+S(G)
      • Q(c);CHECK,S_CUTB(a)::R(H)+B(I)
      • R(d);CHECK,S_CUTB(a)::R(H)+B(I)
      • B(a);XR(H)::QAR1(C)
      • Q(c);::B(B)+S(G),DCHECK
      • S(e);N_SPINQ(c)::B(B)+S(G),DCHECK
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