MESON Chess Problem Database
Problem Display
PID: 4505 (4n3/1p1K1N2/4Np2/1P1k1np1/2p1p3/8/1QP2B2/8 w - - 0 1)
Henderson, John
1st Prize Set, Toronto Mail, 1872
#2
7 + 8
| 4774 | Canadian Chess Problems | 1890 |
SOLUTION
- SOUND
- Sets
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 1...Sfd6
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sfg7
- 2.Qd4#
- 1...Sed6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Seg7
- 2.Sc7#
- 1...c3
- 2.Qa2#
- 2.Qb3#
- 1...g4
- 2.Sf4#
- 1...Se3
- Tries
- 1.Be3?
- 1...Sxe3
- 2.Qd4#
- 1...c3
- 2.Qa2#
- 2.Qb3#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 1...Sfd6
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sfg7
- 2.Qd4#
- 1...Sed6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Seg7
- 2.Sc7#
- 1...g4
- 2.Sf4#
- 1...b6!
- 1...Sxe3
- 1.Bb6?
- 1...c3
- 2.Qa2#
- 2.Qb3#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 1...Sfd6
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sfg7
- 2.Qd4#
- 1...Sed6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Seg7
- 2.Sc7#
- 1...g4
- 2.Sf4#
- 1...e3!
- 1...c3
- 1.Qa3?
- threat
- 2.Qc5#
- 1...b6
- 2.Qa8#
- 1...e3!
- threat
- 1.b6?
- threat
- 2.Qb5#
- 1...Sd4
- 2.Qxd4#
- 1...Sfd6
- 2.Qd4#
- 1...Sed6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...e3!
- threat
- 1.Be3?
- Keys
- 1.Qa1!
- 1...c3
- 2.Qa2#
- 1...e3
- 2.Qh1#
- 1...b6
- 2.Qa8#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 2.Qd1#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 2.Qd1#
- 1...Sfd6
- 2.Qd4#
- 2.Qd1#
- 1...Sh6
- 2.Qd4#
- 2.Qd1#
- 1...Se7
- 2.Qd4#
- 2.Qd1#
- 1...Sfg7
- 2.Qd4#
- 2.Qd1#
- 1...Sed6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Seg7
- 2.Sc7#
- 1...g4
- 2.Sf4#
- 1...c3
- 1.Qa1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(e);N_GUARD::S(E)
- Tries
- Try
- B(C);
- Vars
- S(d);N_GUARD,XB(C)::QAR1(A)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(e);N_GUARD::S(E)
- Refutation
- P(g);
- Try
- B(C);
- Vars
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(e);N_GUARD::S(E)
- Refutation
- P(b);
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- P(g);OGATEB::QAB(A)
- Refutation
- P(b);
- Try
- P(D);
- Threat
- QAR2(A)
- Vars
- S(d);N_GUARD::QAR1(A),XS(d)
- S(d);N_GUARD::QAR1(A)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- Refutation
- P(b);
- Try
- Actual
- Q(A);
- Vars
- P(a);OGATEB::QAB(A)
- P(b);OGATEB::QAB(A)
- P(g);OGATEB::QAB(A)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(e);N_GUARD::S(E)
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