MESON Chess Problem Database

Problem Display
PID: 21031 (1R6/Kbrn4/8/5B2/N7/2p5/P1q5/rkN2R1Q w - - 0 1)

Mansfield, Comins

2nd Prize=, Hampshire Telegraph and Post, 1915

1R6/Kbrn4/8/5B2/N7/2p5/P1q5/rkN2R1Q

#2

8 + 7

887 Mate in Two Moves 1931
4797 A Genius of the Two-mover 1936
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.Se2#
      • 2.Sb3#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Bxc2#
        • 2.Qxc2#
      • 1...Rxa2
        • 2.Se2#
        • 2.Sb3#
      • 1...Qd3
        • 2.Sb3#
        • 2.Sxd3#
      • 1...Qe4
        • 2.Sb3#
      • 1...Qxf5!
    • 1.Qd5?
      • threat
        • 2.Se2#
        • 2.Qb3#
        • 2.Qb5#
      • 1...Qxf5
        • 2.Qb3#
      • 1...Rxa2
        • 2.Sxa2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Qxa2#
      • 1...Qd3
        • 2.Qb3#
      • 1...Qe4
        • 2.Qb3#
      • 1...Rc5
        • 2.Se2#
        • 2.Qb3#
      • 1...Sc5
        • 2.Se2#
      • 1...Rc4!
    • 1.Qh2?
      • threat
        • 2.Bxc2#
        • 2.Qxc2#
      • 1...Rxa2
        • 2.Se2#
        • 2.Sb3#
      • 1...Qd3
        • 2.Sb3#
        • 2.Sxd3#
      • 1...Qe4
        • 2.Sb3#
      • 1...Qxf5!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Bxc2#
      • 1...Qxf5
        • 2.Sd3#
      • 1...Rxa2
        • 2.Se2#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Qe4
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);::R(B)+S(A)
      • Refutation
        • Q(c);N_SPINQ(c),XB(F)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • Q(c);N_SPINQ(c),XB(F)::QAR2(C)
        • Q(c);::QAR2(C)
        • S(g);::R(B)+S(A)
      • Refutation
        • R(f);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);::R(B)+S(A)
      • Refutation
        • Q(c);N_SPINQ(c),XB(F)
  • Actual
    • R(B);
    • Threat
      • B(F),XQ(c)
    • Vars
      • Q(c);N_GUARD,N_SPINQ(c),XB(F)::QAR(C)+S(A)
      • R(a);P_PINS(E),SBLOCK,XP(D)::QAR(C)+S(A)
      • Q(c);N_GUARD::QAR(C)+S(A),XQ(c)
      • Q(c);::QAR(C)+S(A)
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