MESON Chess Problem Database
Problem Display
PID: 21540 (1R6/8/2Q1K3/8/PN6/qkp5/R7/8 w - - 0 1)
Mansfield, Comins
Good Companions Meredith Ty., 1919
#2
6 + 3
| 3202 | Complete Mansfield/I | 1996 |
| 3310 | 2345 Chess Problems | 1997 |
| 14868 | Pirnie Collection | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Qd5#
- 1...Qb2
- 2.Qd5#
- 1...Qxb4
- 2.Qd5#
- 1...Qxa4
- 2.Qd5#
- 1...c2
- 2.Qxc2#
- 1...Qc1
- Tries
- 1.Kd5?
- 1...Qxb4
- 2.Qc4#
- 1...Qxa4
- 2.Qxa4#
- 2.Qc4#
- 1...Qc1
- 2.Qc4#
- 1...Qb2
- 2.Qc4#
- 1...c2
- 2.Qxc2#
- 1...Qxa2!
- 1...Qxb4
- 1.Ke5?
- 1...Qxb4
- 2.Qd5#
- 2.Qe6#
- 1...Qxa4
- 2.Qd5#
- 2.Qe6#
- 1...Qc1
- 2.Qd5#
- 2.Qe6#
- 1...Qb2
- 2.Qd5#
- 2.Qe6#
- 1...c2
- 2.Qxc2#
- 1...Qxa2!
- 1...Qxb4
- 1.Kf5?
- 1...Qxb4
- 2.Qd5#
- 2.Qe6#
- 1...Qxa4
- 2.Qd5#
- 2.Qe6#
- 1...Qc1
- 2.Qd5#
- 2.Qe6#
- 1...Qb2
- 2.Qd5#
- 2.Qe6#
- 1...c2
- 2.Qxc2#
- 1...Qxa2!
- 1...Qxb4
- 1.Kf6?
- 1...Qxb4
- 2.Qd5#
- 2.Qe6#
- 1...Qxa4
- 2.Qd5#
- 2.Qe6#
- 1...Qc1
- 2.Qd5#
- 2.Qe6#
- 1...Qb2
- 2.Qd5#
- 2.Qe6#
- 1...c2
- 2.Qxc2#
- 1...Qxa2!
- 1...Qxb4
- 1.Kf7?
- 1...Qxb4
- 2.Qd5#
- 2.Qe6#
- 1...Qxa4
- 2.Qd5#
- 2.Qe6#
- 1...Qc1
- 2.Qd5#
- 2.Qe6#
- 1...Qb2
- 2.Qd5#
- 2.Qe6#
- 1...c2
- 2.Qxc2#
- 1...Qxa2!
- 1...Qxb4
- 1.Sc2+?
- 1...Qb4
- 2.Qd5#
- 1...Kxa2!
- 1...Qb4
- 1.Sd3+?
- 1...Qb4
- 2.Sc1#
- 2.Qd5#
- 1...Kxa2!
- 1...Qb4
- 1.Sa6+?
- 1...Qb4
- 2.Qd5#
- 1...Kxa2!
- 1...Qb4
- 1.Rb6?
- 1...Qxb4
- 2.Qd5#
- 1...Qxa4
- 2.Qd5#
- 1...Qc1
- 2.Qd5#
- 1...Qb2
- 2.Qd5#
- 1...c2
- 2.Qxc2#
- 1...Qxa2!
- 1...Qxb4
- 1.Rb7?
- 1...Qxb4
- 2.Qd5#
- 1...Qxa4
- 2.Qd5#
- 1...Qc1
- 2.Qd5#
- 1...Qb2
- 2.Qd5#
- 1...c2
- 2.Qxc2#
- 1...Qxa2!
- 1...Qxb4
- 1.Qg2?
- 1...Kc4
- 2.Qd5#
- 1...Qxb4
- 2.Qd5#
- 1...Qxa2
- 2.Qxa2#
- 1...Qxa4
- 2.Qd5#
- 1...c2
- 2.Qxc2#
- 1...Qc1
- 2.Qd5#
- 1...Qb2
- 2.Qd5#
- 1...Kxa4!
- 1...Kc4
- 1.Qxc3+?
- 1...Kxa4
- 2.Rxa3#
- 2.Qxa3#
- 1...Kxc3!
- 1...Kxa4
- 1.Qc4+?
- 1...Kxa4
- 2.Sc6#
- 2.Ra8#
- 1...Kxc4!
- 1...Kxa4
- 1.Kd5?
- Keys
- 1.Qe4!
- 1...Kxa4
- 2.Sc6#
- 1...Qxb4
- 2.Qd5#
- 1...Qxa2
- 2.Sc2#
- 1...Qxa4
- 2.Qd5#
- 1...c2
- 2.Qxc2#
- 1...Qc1
- 2.Qd5#
- 1...Qb2
- 2.Qd5#
- 1...Kxa4
- 1.Qe4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(a);::QAB(D)
- Q(a);P_SPINQ(a),XS(C)::QAB(D)
- Q(a);XP(B)::QAB(D)
- P(c);OGATE::QAB1(D),XP(c)
- Tries
- Try
- K(E);S_FLIGHT
- Vars
- Q(a);P_SPINQ(a),XS(C)::QAB1(D)
- Q(a);::QAB1(D)
- P(c);OGATE::QAB1(D),XP(c)
- Refutation
- Q(a);XR(A)
- Try
- K(E);P-FLIGHT
- Vars
- P(c);OGATE::QAB1(D),XP(c)
- Refutation
- Q(a);XR(A)
- Try
- K(E);S_FLIGHT
- Vars
- P(c);OGATE::QAB1(D),XP(c)
- Refutation
- Q(a);XR(A)
- Try
- K(E);P-FLIGHT
- Vars
- P(c);OGATE::QAB1(D),XP(c)
- Refutation
- Q(a);XR(A)
- Try
- K(E);S_FLIGHT
- Vars
- P(c);OGATE::QAB1(D),XP(c)
- Refutation
- Q(a);XR(A)
- Try
- S(C);CHECK
- Vars
- Q(a);P_SPINQ(a)::QAB(D)
- Refutation
- K(b);S_FLIGHT,XR(A)
- Try
- S(C);CHECK
- Refutation
- K(b);S_FLIGHT,XR(A)
- Try
- S(C);CHECK
- Vars
- Q(a);P_SPINQ(a)::QAB(D)
- Refutation
- K(b);S_FLIGHT,XR(A)
- Try
- R(F);
- Vars
- Q(a);P_SPINQ(a),XS(C)::QAB(D)
- Q(a);XP(B)::QAB(D)
- Q(a);::QAB(D)
- P(c);OGATE::QAB1(D),XP(c)
- Refutation
- Q(a);XR(A)
- Try
- R(F);
- Vars
- Q(a);P_SPINQ(a),XS(C)::QAB(D)
- Q(a);XP(B)::QAB(D)
- Q(a);::QAB(D)
- P(c);OGATE::QAB1(D),XP(c)
- Refutation
- Q(a);XR(A)
- Try
- Q(D);
- Vars
- K(b);S_FLIGHT::QAB1(D)
- Q(a);P_SPINQ(a),XS(C)::QAB(D)
- Q(a);OGATE,XR(A)::QAB1(D),XQ(a)
- Q(a);XP(B)::QAB(D)
- P(c);::QAB1(D),XP(c)
- Q(a);::QAB(D)
- Refutation
- K(b);P_SPINQ(a),S_FLIGHT,XP(B)
- Try
- Q(D);CHECK,XP(c)
- Refutation
- K(b);P-FLIGHT,XQ(D)
- Try
- Q(D);CHECK
- Refutation
- K(b);S_FLIGHT,XQ(D)
- Try
- Actual
- Q(D);
- Vars
- K(b);P_SPINQ(a),S_FLIGHT,XP(B)::QAR(D)+S(C)
- Q(a);P_SPINQ(a),XS(C)::QAB(D)
- Q(a);N_GUARD,SBLOCK,XR(A)::R(F)+S(C)
- Q(a);XP(B)::QAB(D)
- P(c);::QAB1(D),XP(c)
- Q(a);::QAB(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).