MESON Chess Problem Database

Problem Display
PID: 55211 (1B2K3/2R1Pp2/p3qp2/6bB/R3PkN1/P4N2/r3p1PP/7n w - - 0 1)

Mansfield, Comins

2nd HM., The Problemist, 1972

1B2K3/2R1Pp2/p3qp2/6bB/R3PkN1/P4N2/r3p1PP/7n

#2

12 + 9

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qb3
      • 2.Rb7#
    • 1...Qc4
      • 2.Rcxc4#
    • 1...Qxg4
      • 2.Rc3#
    • 1...Qd7+
      • 2.Rxd7#
    • 1...Qc8+
      • 2.Rxc8#
    • 1...Qxe4
      • 2.Rc5#
    • 1...Qc6+
      • 2.Rxc6#
    • 1...Qxe7+
      • 2.Rxe7#
  • Tries
    • 1.Rc1+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
    • 1.Rc2+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
    • 1.Rc3+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
    • 1.Rcc4+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
    • 1.Rc5+?
      • 1...Qd6
        • 2.Bxd6#
        • 2.Rf5#
      • 1...Qe5!
    • 1.Rc6+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
    • 1.Ra7+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
    • 1.Rb7+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
    • 1.Rd7+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
    • 1.Rc8+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
  • Keys
    • 1.Sg1!
      • threat
        • 2.Sh3#
      • 1...Qd7+
        • 2.Rxd7#
      • 1...Qc8+
        • 2.Rxc8#
      • 1...Qc6+
        • 2.Rxc6#
      • 1...Qxe7+
        • 2.Rxe7#
      • 1...Qxg4
        • 2.Rc3#
      • 1...Qxe4
        • 2.Rc5#
      • 1...Rxa3
        • 2.Sxe2#
      • 1...Qc4
        • 2.Rcxc4#
      • 1...Qb3
        • 2.Rb7#
      • 1...Sf2
        • 2.g3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_GUARD,N_PINP(J)::B(K)+R(I)
    • Q(g);N_GUARD,N_PINP(J)::B(K)+R(I),XQ(g)
    • Q(g);N_GUARD,N_PINP(J),XS(G)::B(K)+R(I)
    • Q(g);CHECK,N_GUARD,N_PINP(J)::B(K)+R(I),XQ(g)
    • Q(g);N_GUARD,P_SPINQ(g),XP(F)::B(K)+R(I)
    • Q(g);CHECK,OGATE,XP(J)::B(K)+R(I),XQ(g)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • R(I);CHECK
      • Vars
        • Q(g);N_GUARD,N_PINP(J),P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(g);CHECK,N_GUARD,N_PINP(J)::B(K)+R(I),XQ(g)
      • Q(g);CHECK,OGATE,XP(J)::B(K)+R(I),XQ(g)
      • Q(g);N_GUARD,N_PINP(J),XS(G)::B(K)+R(I)
      • Q(g);N_GUARD,P_SPINQ(g),XP(F)::B(K)+R(I)
      • R(b);N_GUARD,XP(C)::S(D),XP(c)
      • Q(g);N_GUARD,N_PINP(J)::B(K)+R(I),XQ(g)
      • Q(g);N_GUARD,N_PINP(J)::B(K)+R(I)
      • S(a);N_GUARD::P(A)
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