MESON Chess Problem Database
Problem Display
PID: 3071 (2N5/6pK/1Q1N2P1/3Pk3/1p2P1p1/1P2R1Pp/2P4n/5q2 w - - 0 1)
Bernard, Henry D'Oyly
Morning Post, 1918
#2
11 + 7
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Kf6
- 2.Sf7#
- 1...Qe2
- 2.Sf7#
- 1...Qg2
- 2.Sc4#
- 2.Sf7#
- 1...Qd3
- 2.Sf7#
- 1...Qc4
- 2.Sxc4#
- 2.Sf7#
- 1...Qb5
- 2.Sf7#
- 1...Qa6
- 2.Sf7#
- 1...Qa1
- 2.Sc4#
- 2.Sf7#
- 1...Qb1
- 2.Sc4#
- 2.Sf7#
- 1...Qc1
- 2.Sc4#
- 2.Sf7#
- 1...Qd1
- 2.Sc4#
- 2.Sf7#
- 1...Qe1
- 2.Sc4#
- 2.Sf7#
- 1...Qg1
- 2.Sc4#
- 2.Sf7#
- 1...Qh1
- 2.Sc4#
- 2.Sf7#
- 1...Qf2
- 2.Sc4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Sc4#
- 1...Qf5
- 2.Sc4#
- 1...Qf6
- 2.Sc4#
- 1...Qf7
- 2.Sc4#
- 2.Sxf7#
- 1...Qf8
- 2.Sc4#
- 1...Sf3
- 2.Sf7#
- 1...Kf6
- Tries
- 1.Kg8?
- 1...Qf7+
- 2.Sxf7#
- 1...Kf6
- 2.Sf7#
- 1...Qe2
- 2.Sf7#
- 1...Qg2
- 2.Sc4#
- 2.Sf7#
- 1...Qd3
- 2.Sf7#
- 1...Qc4
- 2.Sxc4#
- 2.Sf7#
- 1...Qb5
- 2.Sf7#
- 1...Qa6
- 2.Sf7#
- 1...Qa1
- 2.Sc4#
- 2.Sf7#
- 1...Qb1
- 2.Sc4#
- 2.Sf7#
- 1...Qc1
- 2.Sc4#
- 2.Sf7#
- 1...Qd1
- 2.Sc4#
- 2.Sf7#
- 1...Qe1
- 2.Sc4#
- 2.Sf7#
- 1...Qg1
- 2.Sc4#
- 2.Sf7#
- 1...Qh1
- 2.Sc4#
- 2.Sf7#
- 1...Qf2
- 2.Sc4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Sc4#
- 1...Qf5
- 2.Sc4#
- 1...Qf6
- 2.Sc4#
- 1...Sf3
- 2.Sf7#
- 1...Qf8+!
- 1...Qf7+
- 1.Kh8?
- 1...Kf6
- 2.Sf7#
- 1...Qe2
- 2.Sf7#
- 1...Qg2
- 2.Sc4#
- 2.Sf7#
- 1...Qd3
- 2.Sf7#
- 1...Qc4
- 2.Sxc4#
- 2.Sf7#
- 1...Qb5
- 2.Sf7#
- 1...Qa6
- 2.Sf7#
- 1...Qa1
- 2.Sc4#
- 2.Sf7#
- 1...Qb1
- 2.Sc4#
- 2.Sf7#
- 1...Qc1
- 2.Sc4#
- 2.Sf7#
- 1...Qd1
- 2.Sc4#
- 2.Sf7#
- 1...Qe1
- 2.Sc4#
- 2.Sf7#
- 1...Qg1
- 2.Sc4#
- 2.Sf7#
- 1...Qh1
- 2.Sc4#
- 2.Sf7#
- 1...Qf2
- 2.Sc4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Sc4#
- 1...Qf5
- 2.Sc4#
- 1...Qf6
- 2.Sc4#
- 1...Qf7
- 2.Sc4#
- 2.Sxf7#
- 1...Sf3
- 2.Sf7#
- 1...Qf8+!
- 1...Kf6
- 1.Sb5?
- threat
- 2.Qd4#
- 2.Qd6#
- 2.Qe6#
- 1...Qd3
- 2.Qd6#
- 2.Qe6#
- 1...Qc4
- 2.Qd6#
- 2.Qe6#
- 1...Qa1
- 2.Qd6#
- 2.Qe6#
- 1...Qd1
- 2.Qd6#
- 2.Qe6#
- 1...Qf5
- 2.Qd4#
- 2.Qd6#
- 1...Qf6
- 2.Qd4#
- 1...Qf7
- 2.Qd4#
- 2.Qd6#
- 1...Qf8
- 2.Qd4#
- 2.Qe6#
- 1...Sf3
- 2.Qd6#
- 2.Qe6#
- 1...Qxb5!
- threat
- 1.Sf5?
- threat
- 2.Qd4#
- 2.Qd6#
- 2.Qe6#
- 1...Qd3
- 2.Qd6#
- 2.Qe6#
- 1...Qc4
- 2.Qd6#
- 2.Qe6#
- 1...Qa6
- 2.Qd4#
- 1...Qa1
- 2.Qd6#
- 2.Qe6#
- 1...Qd1
- 2.Qd6#
- 2.Qe6#
- 1...Sf3
- 2.Qd6#
- 2.Qe6#
- 1...Qxf5!
- threat
- 1.Sa7?
- 1...Qe2
- 2.Sf7#
- 1...Qg2
- 2.Sc4#
- 2.Sf7#
- 1...Qd3
- 2.Sf7#
- 1...Qc4
- 2.Sxc4#
- 2.Sf7#
- 1...Qb5
- 2.Sf7#
- 1...Qa6
- 2.Sf7#
- 1...Qa1
- 2.Sc4#
- 2.Sf7#
- 1...Qb1
- 2.Sc4#
- 2.Sf7#
- 1...Qc1
- 2.Sc4#
- 2.Sf7#
- 1...Qd1
- 2.Sc4#
- 2.Sf7#
- 1...Qe1
- 2.Sc4#
- 2.Sf7#
- 1...Qg1
- 2.Sc4#
- 2.Sf7#
- 1...Qh1
- 2.Sc4#
- 2.Sf7#
- 1...Qf2
- 2.Sc4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Sc4#
- 1...Qf5
- 2.Sc4#
- 1...Qf6
- 2.Sc4#
- 1...Qf7
- 2.Sc4#
- 2.Sxf7#
- 1...Qf8
- 2.Sc4#
- 1...Sf3
- 2.Sf7#
- 1...Kf6!
- 1...Qe2
- 1.Se7?
- 1...Qe2
- 2.Sf7#
- 1...Qg2
- 2.Sc4#
- 2.Sf7#
- 1...Qd3
- 2.Sf7#
- 1...Qc4
- 2.Sxc4#
- 2.Sf7#
- 1...Qb5
- 2.Sf7#
- 1...Qa6
- 2.Sf7#
- 1...Qa1
- 2.Sc4#
- 2.Sf7#
- 1...Qb1
- 2.Sc4#
- 2.Sf7#
- 1...Qc1
- 2.Sc4#
- 2.Sf7#
- 1...Qd1
- 2.Sc4#
- 2.Sf7#
- 1...Qe1
- 2.Sc4#
- 2.Sf7#
- 1...Qg1
- 2.Sc4#
- 2.Sf7#
- 1...Qh1
- 2.Sc4#
- 2.Sf7#
- 1...Qf2
- 2.Sc4#
- 1...Qf3
- 2.Sc4#
- 1...Qf4
- 2.Sc4#
- 1...Qf5
- 2.Sc4#
- 1...Qf6
- 2.Sc4#
- 1...Qf7
- 2.Sc4#
- 2.Sxf7#
- 1...Qf8
- 2.Sc4#
- 1...Sf3
- 2.Sf7#
- 1...Kf6!
- 1...Qe2
- 1.Re2?
- threat
- 2.Sc4#
- 1...Kf6
- 2.Sf7#
- 1...Qxe2!
- threat
- 1.c3?
- threat
- 2.Qd4#
- 1...Kf6
- 2.Sf7#
- 1...Qd3
- 2.Sf7#
- 1...Qc4
- 2.Sxc4#
- 2.Sf7#
- 1...Qd1
- 2.Sc4#
- 2.Sf7#
- 1...Sf3
- 2.Sf7#
- 1...bxc3!
- threat
- 1.Kg8?
- Keys
- 1.Qa7!
- 1...Kf6
- 2.Qe7#
- 1...Qe2
- 2.Qa1#
- 2.Qxg7#
- 1...Qg2
- 2.Qa1#
- 2.Qxg7#
- 1...Qd3
- 2.Qxg7#
- 1...Qc4
- 2.Qxg7#
- 1...Qb5
- 2.Qa1#
- 2.Qxg7#
- 1...Qa6
- 2.Qxg7#
- 1...Qa1
- 2.Qxa1#
- 2.Qxg7#
- 1...Qb1
- 2.Qxg7#
- 1...Qc1
- 2.Qxg7#
- 1...Qd1
- 2.Qxg7#
- 1...Qe1
- 2.Qxg7#
- 1...Qg1
- 2.Qxg7#
- 1...Qh1
- 2.Qxg7#
- 1...Qf2
- 2.Qa1#
- 1...Qf3
- 2.Qa1#
- 1...Qf4
- 2.Qa1#
- 1...Qf5
- 2.Qa1#
- 1...Qf6
- 2.Sc4#
- 2.Qa1#
- 1...Qf7
- 2.Qa1#
- 1...Qf8
- 2.Qa1#
- 1...Sf3
- 2.Qxg7#
- 1...Kf6
- 1.Qa7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 8
- REMOVED MATES = 3
- Sets
- K(f);S_FLIGHT::QAR(G)+S(H)
- Q(a);N_GUARD::S(H)
- Q(a);N_GUARD,P_PINP(I)::S(H)
- S(b);S_CUTQ(a)::S(H)
- Tries
- Try
- K(J);S_FLIGHT
- Vars
- Q(a);CHECK,N_GUARD::S(H),XQ(a)
- K(f);S_FLIGHT::QAR(G)+S(H)
- Q(a);N_GUARD::S(H)
- S(b);S_CUTQ(a)::S(H)
- Refutation
- Q(a);CHECK
- Try
- K(J);P-FLIGHT
- Vars
- K(f);S_FLIGHT::QAR(G)+S(H)
- Q(a);N_GUARD::S(H)
- S(b);S_CUTQ(a)::S(H)
- Refutation
- Q(a);CHECK
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(a);SBLOCK::QAB1(G)
- Refutation
- Q(a);XS(H)
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(a);::QAB1(G)
- Refutation
- Q(a);P_PINP(I),XS(H)
- Try
- S(K);
- Vars
- Q(a);N_GUARD::S(H)
- Q(a);N_GUARD,P_PINP(I)::S(H)
- S(b);S_CUTQ(a)::S(H)
- Refutation
- K(f);S_FLIGHT
- Try
- S(K);
- Vars
- Q(a);N_GUARD::S(H)
- Q(a);N_GUARD,P_PINP(I)::S(H)
- S(b);S_CUTQ(a)::S(H)
- Refutation
- K(f);S_FLIGHT
- Try
- R(C);
- Threat
- S(H)
- Vars
- K(f);S_FLIGHT::QAR(G)+S(H)
- Refutation
- Q(a);XR(C)
- Try
- P(A);
- Threat
- QAB1(G)
- Vars
- K(f);S_FLIGHT::QAR(G)+S(H)
- Q(a);N_GUARD::S(H)
- S(b);S_CUTQ(a)::S(H)
- Refutation
- P(d);XP(A)
- Try
- Actual
- Q(G);
- Vars
- K(f);S_FLIGHT::QAB1(G)
- Q(a);N_GUARD::QAB(G),XP(g)
- Q(a);N_GUARD::QAB(G)
- Q(a);N_GUARD,P_PINP(I)::QAB(G)
- S(b);S_CUTQ(a)::QAB(G),XP(g)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).