MESON Chess Problem Database
Problem Display
PID: 174996 (6B1/ppB1R1NQ/8/1p2N3/1P1k2p1/R1n5/1n6/5K2 w - - 0 1)
Mackenzie, Arthur Ford
Philadelphia Times, 1901
#2
9 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sbd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sba4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sb1
- 2.Rd7#
- 1...Scd1
- 2.Rd7#
- 1...Sa2
- 2.Rd7#
- 1...Se2
- 2.Rd7#
- 1...Sca4
- 2.Rd7#
- 1...Se4
- 2.Sf5#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Sbd1
- Tries
- 1.Ke1?
- 1...Sd3+
- 2.Qxd3#
- 1...Sbd1
- 2.Qd3#
- 1...Sba4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sb1
- 2.Rd7#
- 1...Scd1
- 2.Rd7#
- 1...Sa2
- 2.Rd7#
- 1...Se2
- 2.Rd7#
- 1...Sca4
- 2.Rd7#
- 1...Se4
- 2.Sf5#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Ke3!
- 1...Sd3+
- 1.Sxg4?
- threat
- 2.Be5#
- 1...Sd5
- 2.Re4#
- 2.Qe4#
- 1...Sd3
- 2.Sf5#
- 1...Sc4!
- threat
- 1.Se6+?
- 1...Kd5
- 2.Rd7#
- 1...Ke3!
- 1...Kd5
- 1.Ba2?
- 1...Sxa2
- 2.Rd7#
- 1...Sc4
- 2.Qd3#
- 1...Sbd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sba4
- 2.Qd3#
- 1...Sb1
- 2.Se6#
- 2.Rd7#
- 1...Scd1
- 2.Se6#
- 2.Rd7#
- 1...Se2
- 2.Se6#
- 2.Rd7#
- 1...Sca4
- 2.Se6#
- 2.Rd7#
- 1...Se4
- 2.Sf5#
- 2.Se6#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Ke3!
- 1...Sxa2
- 1.Bf7?
- 1...Sbd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sba4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sb1
- 2.Rd7#
- 1...Scd1
- 2.Rd7#
- 1...Sa2
- 2.Rd7#
- 1...Se2
- 2.Rd7#
- 1...Sca4
- 2.Rd7#
- 1...Se4
- 2.Sf5#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Ke3!
- 1...Sbd1
- 1.Rb3?
- 1...Sbd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sba4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sb1
- 2.Rd7#
- 1...Scd1
- 2.Rd7#
- 1...Sa2
- 2.Rd7#
- 1...Se2
- 2.Rd7#
- 1...Sca4
- 2.Rd7#
- 1...Se4
- 2.Sf5#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Ke3!
- 1...Sbd1
- 1.Rd7+?
- 1...Sd5
- 2.Se6#
- 2.Rxd5#
- 1...Ke3!
- 1...Sd5
- 1.Re8?
- 1...Sbd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sba4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sb1
- 2.Rd8#
- 1...Scd1
- 2.Rd8#
- 1...Sa2
- 2.Rd8#
- 1...Se2
- 2.Rd8#
- 1...Sca4
- 2.Rd8#
- 1...Se4
- 2.Sf5#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Ke3!
- 1...Sbd1
- 1.Qc2?
- threat
- 2.Sf5#
- 1...Sd3
- 2.Qxd3#
- 1...Ke3!
- threat
- 1.Qe4+?
- 1...Sxe4
- 2.Sf5#
- 1...Kxe4!
- 1...Sxe4
- 1.Qf5?
- 1...Ke3
- 2.Sf3#
- 1...Sbd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sba4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sb1
- 2.Rd7#
- 2.Qxg4#
- 2.Qf4#
- 1...Scd1
- 2.Rd7#
- 2.Qxg4#
- 2.Qf4#
- 1...Sa2
- 2.Rd7#
- 2.Qxg4#
- 2.Qf4#
- 1...Se2
- 2.Rd7#
- 1...Sca4
- 2.Rd7#
- 2.Qxg4#
- 2.Qf4#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Se4!
- 1...Ke3
- 1.Qg6?
- 1...Se4
- 2.Sf5#
- 1...Sbd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sba4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sb1
- 2.Rd7#
- 2.Qxg4#
- 1...Scd1
- 2.Rd7#
- 2.Qxg4#
- 1...Sa2
- 2.Rd7#
- 2.Qxg4#
- 1...Se2
- 2.Rd7#
- 1...Sca4
- 2.Rd7#
- 2.Qxg4#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Ke3!
- 1...Se4
- 1.Ke1?
- Keys
- 1.Kg2!
- 1...Ke3
- 2.Sf3#
- 1...Sbd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sba4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sb1
- 2.Rd7#
- 1...Scd1
- 2.Rd7#
- 1...Sa2
- 2.Rd7#
- 1...Se2
- 2.Rd7#
- 1...Sca4
- 2.Rd7#
- 1...Se4
- 2.Sf5#
- 1...Sd5
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...a5
- 2.Bb6#
- 1...a6
- 2.Bb6#
- 1...b6
- 2.Sc6#
- 1...Ke3
- 1.Kg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR1(H)
- S(a);N_GUARD::QAR1(H),XS(a)
- S(b);N_GUARD::R(F)
- S(b);SBLOCK::S(G)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(a);CHECK,N_GUARD::QAR1(H),XS(a)
- S(a);N_GUARD::QAR1(H)
- S(b);N_GUARD::R(F)
- S(b);SBLOCK::S(G)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- S(D);XP(d)
- Threat
- B(E)
- Vars
- S(a);SBLOCK::S(G)
- Refutation
- S(a);
- Try
- S(G);CHECK
- Vars
- K(c);P-FLIGHT::R(F)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- B(I);
- Vars
- S(b);N_GUARD,XB(I)::R(F)
- S(a);N_GUARD::QAR1(H)
- S(a);N_GUARD::QAR1(H),XS(a)
- S(b);::S(G)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- B(I);
- Vars
- S(a);N_GUARD::QAR1(H)
- S(a);N_GUARD::QAR1(H),XS(a)
- S(b);N_GUARD::R(F)
- S(b);SBLOCK::S(G)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAR1(H)
- S(a);N_GUARD::QAR1(H),XS(a)
- S(b);N_GUARD::R(F)
- S(b);SBLOCK::S(G)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- R(F);CHECK
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- R(F);
- Vars
- S(a);N_GUARD::QAR1(H)
- S(a);N_GUARD::QAR1(H),XS(a)
- S(b);N_GUARD::R(F)
- S(b);SBLOCK::S(G)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- Q(H);
- Threat
- S(G)
- Vars
- S(a);N_GUARD::QAR1(H),XS(a)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- Q(H);CHECK
- Vars
- S(b);SBLOCK,XQ(H)::S(G)
- Refutation
- K(c);P-FLIGHT,XQ(H)
- Try
- Q(H);
- Vars
- K(c);P_SPINS(b),S_FLIGHT::R(F)+S(D)
- S(a);N_GUARD::QAR1(H)
- S(a);N_GUARD::QAR1(H),XS(a)
- S(b);N_GUARD::R(F)
- S(b);SBLOCK::S(G)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
- Refutation
- S(b);
- Try
- Q(H);
- Vars
- S(b);SBLOCK::S(G)
- S(a);N_GUARD::QAR1(H)
- S(a);N_GUARD::QAR1(H),XS(a)
- S(b);N_GUARD::R(F)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT
- Try
- Actual
- K(A);S_FLIGHT
- Vars
- K(c);P_SPINS(b),S_FLIGHT::R(F)+S(D)
- S(a);N_GUARD::QAR1(H)
- S(a);N_GUARD::QAR1(H),XS(a)
- S(b);N_GUARD::R(F)
- S(b);SBLOCK::S(G)
- P(d);N_GUARD::S(D)
- P(f);N_GUARD::B(E)
- P(g);N_GUARD::S(D)
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).