MESON Chess Problem Database

Problem Display
PID: 4865 (B7/p7/Pb2pp2/4pn2/1BNk4/1P3pP1/p4Pp1/qbQ1n1K1 w - - 0 1)

Williams, Philip Hamilton

The Schoolmaster, 1892

B7/p7/Pb2pp2/4pn2/1BNk4/1P3pP1/p4Pp1/qbQ1n1K1

#2

9 + 13

15569 Chess Problems by Philip H. Williams

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qd2#
      • 2.Qd1#
    • 1...Qc3
      • 2.Qxc3#
    • 1...Bd3
      • 2.Qxa1#
    • 1...Sc2
      • 2.Qd2#
      • 2.Qd1#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sxg3
      • 2.Qe3#
    • 1...Sh4
      • 2.Qe3#
    • 1...Sd6
      • 2.Qe3#
    • 1...Sh6
      • 2.Qe3#
    • 1...Se7
      • 2.Qe3#
    • 1...Sg7
      • 2.Qe3#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Qc3#
        • 2.Qc4#
      • 1...Qxb2
        • 2.Qc4#
      • 1...e4
        • 2.Qc3#
      • 1...Bd3
        • 2.Qc3#
      • 1...Sc2
        • 2.Qd2#
        • 2.Qd1#
      • 1...Se3
        • 2.Qxe3#
        • 2.Qc3#
        • 2.fxe3#
      • 1...Sd6
        • 2.Qe3#
        • 2.Qc3#
      • 1...Bc2!
    • 1.Qb2+?
      • 1...Kd3
        • 2.Qd2#
      • 1...Qxb2!
    • 1.Qd1+?
      • 1...Bd3
        • 2.Qxa1#
      • 1...Sd3!
  • Keys
    • 1.Sxe5!
      • 1...Kxe5
        • 2.Qf4#
      • 1...Sxg3
        • 2.Qe3#
      • 1...fxe5
        • 2.Qc4#
      • 1...Bc2
        • 2.Qxa1#
      • 1...Qb2
        • 2.Qxb2#
      • 1...Qc3
        • 2.Qxc3#
      • 1...Bd3
        • 2.Qxa1#
      • 1...Be4
        • 2.Qxa1#
      • 1...Ba5
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bc7
        • 2.Qc5#
      • 1...Bd8
        • 2.Qc5#
      • 1...Sc2
        • 2.Qf4#
      • 1...Sd3
        • 2.Sxf3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sh4
        • 2.Qe3#
      • 1...Sd6
        • 2.Qe3#
      • 1...Sh6
        • 2.Qe3#
      • 1...Se7
        • 2.Qe3#
      • 1...Sg7
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD::QAB1(A),XQ(a)
    • B(b);OGATE,SBLOCK::QAB(A),XQ(a)
    • S(i);N_GUARD::QAB1(A),XS(i)
    • S(i);N_GUARD,XP(E)::QAB1(A)
    • S(i);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XS(G)::QAR1(A)
        • P(h);::QAB1(A)
        • B(b);::QAB1(A)
      • Refutation
        • B(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(g);P-FLIGHT,P_PINP(C)::QAR1(A)
      • Refutation
        • Q(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • B(b);OGATE,P_SPINB(b),SBLOCK::QAB(A),XQ(a)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • S(G);XP(h)
    • Vars
      • K(g);P_PINP(C),S_FLIGHT,XS(G)::QAB1(A)
      • S(i);N_GUARD,XP(E)::QAB1(A)
      • P(l);SBLOCK,XS(G)::QAR1(A)
      • B(b);OGATE::QAB(A),XQ(a)
      • Q(a);N_GUARD::QAB(A),XQ(a)
      • Q(a);N_GUARD::QAB1(A),XQ(a)
      • B(j);N_GUARD::QAB1(A)
      • B(j);N_GUARD::QAB1(A),XB(j)
      • S(c);S_CUTB(b)::QAR2(A)
      • S(c);N_GUARD,SBLOCK::S(G),XP(f)
      • S(i);N_GUARD::QAB1(A),XS(i)
      • S(i);N_GUARD::QAB1(A)
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