MESON Chess Problem Database
Problem Display
PID: 103266 (4B3/3nR3/3pN3/3k2p1/6P1/2K2P2/7Q/2R5 w - - 0 1)
Mackenzie, Arthur Ford
Land and Water, 1887
#2
8 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sc5
- 2.Sc7#
- 1...Sb6
- 2.Rd1#
- 1...Sf6
- 2.Rd1#
- 1...Sb8
- 2.Rd1#
- 1...Sf8
- 2.Rd1#
- 1...Sc5
- Tries
- 1.Ra1?
- 1...Se5
- 2.Ra5#
- 1...Sc5
- 2.Sc7#
- 1...Sb6
- 2.Rd1#
- 2.Ra5#
- 1...Sf6
- 2.Rd1#
- 2.Ra5#
- 1...Sb8
- 2.Rd1#
- 2.Ra5#
- 1...Sf8
- 2.Rd1#
- 2.Ra5#
- 1...Kc6!
- 1...Se5
- 1.Rb1?
- 1...Se5
- 2.Rb5#
- 1...Sc5
- 2.Sc7#
- 1...Sb6
- 2.Rd1#
- 2.Rb5#
- 1...Sf6
- 2.Rd1#
- 2.Rb5#
- 1...Sb8
- 2.Rd1#
- 2.Rb5#
- 1...Sf8
- 2.Rd1#
- 2.Rb5#
- 1...Kc6!
- 1...Se5
- 1.Rxd7?
- threat
- 2.Rxd6#
- 2.Qxd6#
- 1...Kxe6
- 2.Qxd6#
- 1...Kc6!
- threat
- 1.Qg1?
- 1...Ke5
- 2.Qd4#
- 1...Se5
- 2.Sc7#
- 2.Qd4#
- 1...Sc5
- 2.Sc7#
- 2.Qd4#
- 1...Sb6
- 2.Sc7#
- 2.Qd4#
- 1...Sf6
- 2.Sc7#
- 2.Qd4#
- 1...Sb8
- 2.Sc7#
- 2.Qd4#
- 1...Sf8
- 2.Sc7#
- 2.Qd4#
- 1...Kc6!
- 1...Ke5
- 1.Qc2?
- threat
- 2.Qe4#
- 1...Ke5
- 2.Qf5#
- 1...Sc5
- 2.Sc7#
- 2.Qf5#
- 1...Sf6
- 2.Qf5#
- 1...Kc6!
- threat
- 1.Qd2+?
- 1...Ke5
- 2.Qxg5#
- 2.Qd4#
- 1...Kc6!
- 1...Ke5
- 1.Qe2?
- threat
- 2.Qe4#
- 1...Sc5
- 2.Sc7#
- 1...Sf6
- 2.Rd1#
- 2.Qb5#
- 1...Kc6!
- threat
- 1.Qf2?
- 1...Ke5
- 2.Qd4#
- 1...Se5
- 2.Sc7#
- 2.Qd4#
- 1...Sc5
- 2.Sc7#
- 2.Qd4#
- 1...Sb6
- 2.Sc7#
- 2.Qd4#
- 1...Sf6
- 2.Sc7#
- 2.Qd4#
- 1...Sb8
- 2.Sc7#
- 2.Qd4#
- 1...Sf8
- 2.Sc7#
- 2.Qd4#
- 1...Kc6!
- 1...Ke5
- 1.Qh7?
- threat
- 2.Qe4#
- 1...Ke5
- 2.Qf5#
- 1...Sc5
- 2.Sc7#
- 2.Qf5#
- 1...Sf6
- 2.Qf5#
- 1...Kc6!
- threat
- 1.Ra1?
- Keys
- 1.Qb2!
- 1...Ke5
- 2.Kc4#
- 1...Kc6
- 2.Kd4#
- 1...Se5
- 2.Qb5#
- 1...Sc5
- 2.Sc7#
- 1...Sb6
- 2.Qb5#
- 1...Sf6
- 2.Qb5#
- 1...Sb8
- 2.Qb5#
- 1...Sf8
- 2.Qb5#
- 1...Ke5
- 1.Qb2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(d);SBLOCK::S(F)
- S(d);::R(A)
- Tries
- Try
- R(A);
- Vars
- S(d);N_GUARD::R(A)
- S(d);SBLOCK::S(F)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- R(A);
- Vars
- S(d);N_GUARD::R(A)
- S(d);SBLOCK::S(F)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- R(G);P_PINP(c),XS(d)
- Threat
- DUALS(2)
- Vars
- K(a);N_SPINP(c),S_FLIGHT,XS(F)::QAR1(B),XP(c)
- Refutation
- K(a);N_SPINP(c),S_FLIGHT
- Try
- Q(B);
- Vars
- K(a);P-FLIGHT::QAB1(B)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- K(a);P-FLIGHT::QAR1(B)
- S(d);N_GUARD::QAR2(B)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- Q(B);CHECK
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- S(d);SBLOCK::S(F)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- Q(B);
- Vars
- K(a);P-FLIGHT::QAB1(B)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- K(a);P-FLIGHT::QAR1(B)
- S(d);N_GUARD::QAR2(B)
- Refutation
- K(a);P_SPINS(d),S_FLIGHT
- Try
- Actual
- Q(B);
- Vars
- K(a);P-FLIGHT::QAB(B)+K(C)
- K(a);P_SPINS(d),S_FLIGHT::R(A)+K(C)
- S(d);N_GUARD,SBLOCK::QAR2(B)
- S(d);SBLOCK::S(F)
- S(d);N_GUARD::QAR2(B)
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).