MESON Chess Problem Database

Problem Display
PID: 179573 (n3n2K/P3P3/3krP1B/P1N1p3/P3B3/3P1N2/1Q6/8 w - - 0 1)

Anonymous

British Chess Magazine 15. (Healey MT) Ty., 1909-1910

n3n2K/P3P3/3krP1B/P1N1p3/P3B3/3P1N2/1Q6/8

#2

12 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qa3#
    • 1...Kc7
      • 2.Qb8#
    • 1...Rxf6
      • 2.Qxe5#
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sac7
      • 2.Qb6#
  • Tries
    • 1.Bxa8?
      • threat
        • 2.Qb6#
      • 1...Kxc5
        • 2.Qa3#
      • 1...Kc7
        • 2.Qb8#
      • 1...Rxf6
        • 2.Qxe5#
      • 1...Sxf6!
    • 1.Qd4+?
      • 1...Kc7
        • 2.Qd7#
        • 2.Qd8#
      • 1...exd4!
    • 1.Qb8+?
      • 1...Kxc5
        • 2.Be3#
      • 1...Sac7
        • 2.Qb6#
      • 1...Sec7!
  • Keys
    • 1.Bf8!
      • 1...Kxc5
        • 2.Qa3#
      • 1...Kc7
        • 2.Qb8#
      • 1...Rxf6
        • 2.Qxe5#
      • 1...Rxe7
        • 2.Qxe5#
      • 1...Sxf6
        • 2.e8S#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sac7
        • 2.Qb6#
      • 1...Sec7
        • 2.e8S#
      • 1...Sg7
        • 2.e8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(G)::QAB(A)
    • K(b);S_FLIGHT::QAB1(A)
    • R(c);N_GUARD,XP(H)::QAB1(A),XP(a)
    • S(d);N_GUARD::QAR2(A),XS(d)
    • S(d);N_GUARD::QAR2(A)
  • Tries
    • Try
      • B(E);XS(d)
      • Threat
        • QAR2(A)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(G)::QAB(A)
        • K(b);S_FLIGHT::QAB1(A)
        • R(c);N_GUARD,XP(H)::QAB1(A),XP(a)
      • Refutation
        • S(e);XP(H)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(G)::B(I)
        • S(d);N_GUARD,P_SPINS(d)::QAR2(A)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • B(I);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(G)::QAB(A)
      • K(b);S_FLIGHT::QAB1(A)
      • R(c);N_GUARD,XP(H)::QAB1(A),XP(a)
      • R(c);N_GUARD,P_SPINR(c),XP(K)::QAB1(A),XP(a)
      • S(e);OGATE,XP(H)::P=S
      • S(d);N_GUARD::QAR2(A),XS(d)
      • S(d);N_GUARD::QAR2(A)
      • S(e);OGATE::P=S
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