MESON Chess Problem Database

Problem Display
PID: 109460 (3B4/3P2np/2pN3P/p1P1k2P/p1P2N2/Pn2P3/2K4p/3Q3B w - - 0 1)

Stubbs, Charles Francis

2nd Prize, Canadian Chess Association, 1899

3B4/3P2np/2pN3P/p1P1k2P/p1P2N2/Pn2P3/2K4p/3Q3B

#2

13 + 8

15 British Chess Magazine 1899
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1+
      • 2.Qxa1#
    • 1...Sc1
      • 2.Qd4#
    • 1...Sd2
      • 2.Qa1#
    • 1...Sd4+
      • 2.Qxd4#
    • 1...Sxc5
      • 2.Qd4#
    • 1...Sf5
      • 2.Sf7#
    • 1...Sxh5
      • 2.Qxh5#
    • 1...Se6
      • 2.Sd3#
    • 1...Se8
      • 2.dxe8Q#
      • 2.dxe8R#
  • Tries
    • 1.Kb1?
      • 1...Sxc5
        • 2.Qd4#
      • 1...Sxh5
        • 2.Qxh5#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf5
        • 2.Sf7#
      • 1...Se6
        • 2.Sd3#
      • 1...Se8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sd2+!
    • 1.Kb2?
      • 1...Sxc5
        • 2.Qd4#
      • 1...Sxh5
        • 2.Qxh5#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf5
        • 2.Sf7#
      • 1...Se6
        • 2.Sd3#
      • 1...Se8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sd2!
    • 1.Kc3?
      • 1...Sxc5
        • 2.Qd4#
      • 1...Sxh5
        • 2.Qxh5#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf5
        • 2.Sf7#
      • 1...Se6
        • 2.Sd3#
      • 1...Se8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sd2!
    • 1.Bd5?
      • threat
        • 2.Sd3#
      • 1...Sa1+
        • 2.Qxa1#
      • 1...Sd4+
        • 2.Qxd4#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sxc5!
    • 1.Bg5?
      • 1...Sa1+
        • 2.Qxa1#
      • 1...Sd4+
        • 2.Qxd4#
        • 2.exd4#
      • 1...Sxc5
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sf5
        • 2.Sf7#
      • 1...Se6
        • 2.Sd3#
      • 1...Se8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sxh5!
    • 1.Be7?
      • 1...Sa1+
        • 2.Qxa1#
      • 1...Sd4+
        • 2.Qxd4#
      • 1...Sxc5
        • 2.Qa1#
        • 2.Qd4#
      • 1...Sxh5
        • 2.Qxh5#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sf5
        • 2.Sf7#
      • 1...Se6
        • 2.Sd3#
      • 1...Se8!
    • 1.Qa1+?
      • 1...Sd4+
        • 2.Qxd4#
      • 1...Sxa1+!
    • 1.Qd3?
      • threat
        • 2.Sf7#
        • 2.Qe4#
      • 1...Sd4+
        • 2.Qxd4#
      • 1...Sxc5
        • 2.Sf7#
        • 2.Qd4#
      • 1...Sd2
        • 2.Sf7#
        • 2.Qc3#
        • 2.Qd4#
      • 1...Sa1+!
    • 1.hxg7?
      • 1...Sa1+
        • 2.Qxa1#
      • 1...Sd4+
        • 2.Qxd4#
      • 1...Sxc5
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd2
        • 2.Qa1#
      • 1...h6!
  • Keys
    • 1.Bh4!
      • 1...Sa1+
        • 2.Qxa1#
      • 1...Sd4+
        • 2.Qxd4#
      • 1...Sxc5
        • 2.Qd4#
      • 1...Sxh5
        • 2.Qxh5#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sf5
        • 2.Sf7#
      • 1...Se6
        • 2.Sd3#
      • 1...Se8
        • 2.dxe8Q#
        • 2.dxe8R#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);CHECK,N_GUARD::QAB(A),XS(b)
    • S(b);N_GUARD::QAB1(A)
    • S(b);N_GUARD::QAB(A)
    • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
    • S(b);N_GUARD,XP(H)::QAB1(A)
    • S(g);SBLOCK::S(J)
    • S(g);OGATE,XP(I)::QAR(A),XS(g)
    • S(g);SBLOCK::S(G)
    • S(g);OGATE::PXS(g)=Q
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • S(b);N_GUARD,XP(H)::QAB1(A)
        • S(g);OGATE,XP(I)::QAR(A),XS(g)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
        • S(g);SBLOCK::S(J)
        • S(g);SBLOCK::S(G)
        • S(g);OGATE::PXS(g)=Q
      • Refutation
        • S(b);CHECK
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(b);N_GUARD,XP(H)::QAB1(A)
        • S(g);OGATE,XP(I)::QAR(A),XS(g)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
        • S(g);SBLOCK::S(J)
        • S(g);SBLOCK::S(G)
        • S(g);OGATE::PXS(g)=Q
      • Refutation
        • S(b);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(b);N_GUARD,XP(H)::QAB1(A)
        • S(g);OGATE,XP(I)::QAR(A),XS(g)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB1(A),XS(b)
        • S(g);SBLOCK::S(J)
        • S(g);SBLOCK::S(G)
        • S(g);OGATE::PXS(g)=Q
      • Refutation
        • S(b);
    • Try
      • B(B);
      • Threat
        • S(G)
      • Vars
        • S(b);CHECK,N_GUARD::QAB(A),XS(b)
        • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
        • P(f);OGATE,XB(B)::QAR1(A),XP(f)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • S(b);XP(H)
    • Try
      • B(M);
      • Vars
        • S(b);CHECK,N_GUARD::QAB(A),XS(b)
        • S(b);N_GUARD,XP(H)::QAB1(A)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB(A)
        • S(g);SBLOCK::S(J)
        • S(g);SBLOCK::S(G)
        • S(g);OGATE::PXS(g)=Q
      • Refutation
        • S(g);XP(I)
    • Try
      • B(M);
      • Vars
        • S(b);CHECK,N_GUARD::QAB(A),XS(b)
        • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
        • S(g);OGATE,XP(I)::QAR(A),XS(g)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB(A)
        • S(g);SBLOCK::S(J)
        • S(g);SBLOCK::S(G)
      • Refutation
        • S(g);
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);CHECK,N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • S(b);CHECK,XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
      • Refutation
        • S(b);CHECK
    • Try
      • P(K);XS(g)
      • Vars
        • S(b);CHECK,N_GUARD::QAB(A),XS(b)
        • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
        • S(b);N_GUARD,XP(H)::QAB1(A)
        • S(b);N_GUARD::QAB1(A)
        • S(b);N_GUARD::QAB(A)
      • Refutation
        • P(h);
  • Actual
    • B(M);
    • Vars
      • S(b);CHECK,N_GUARD::QAB(A),XS(b)
      • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
      • S(b);N_GUARD,XP(H)::QAB1(A)
      • S(g);OGATE,XP(I)::QAR(A),XS(g)
      • S(b);N_GUARD::QAB1(A)
      • S(b);N_GUARD::QAB(A)
      • S(g);SBLOCK::S(J)
      • S(g);SBLOCK::S(G)
      • S(g);OGATE::PXS(g)=Q
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