MESON Chess Problem Database
Problem Display
PID: 136656 (8/1N2rnbp/K1R1B3/4k1qp/pQ5N/6p1/8/5R2 w - - 0 1)
Daniel, Arthur William
The Field, 1921
(First published on Sat Mar 5 1921)
#2
7 + 9
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Rf5#
- 1...Qd2
- 2.Rf5#
- 1...Qe3
- 2.Rf5#
- 1...Qf4
- 2.Qxf4#
- 1...Qxh4
- 2.Rf5#
- 1...Qf6
- 2.Re1#
- 1...Qh6
- 2.Rf5#
- 1...Qf5
- 2.Rxf5#
- 1...Qg6
- 2.Qf4#
- 1...Bf6
- 2.Sf3#
- 1...Qc1
- Tries
- 1.Sg6+?
- 1...Qxg6
- 2.Qf4#
- 1...hxg6!
- 1...Qxg6
- 1.Sc5?
- threat
- 2.Sd3#
- 2.Qc3#
- 2.Qb2#
- 2.Qe4#
- 1...Qxh4
- 2.Sd3#
- 2.Rf5#
- 1...Rxe6
- 2.Qe4#
- 1...Qf4
- 2.Qxf4#
- 1...Qf5
- 2.Rxf5#
- 2.Qc3#
- 2.Qb2#
- 1...Qc1
- 2.Sd3#
- 2.Rf5#
- 2.Qe4#
- 1...Qd2
- 2.Rf5#
- 2.Qe4#
- 1...Qe3
- 2.Rf5#
- 1...Qg4
- 2.Sd3#
- 1...Qg6
- 2.Qc3#
- 2.Qb2#
- 2.Qf4#
- 1...Rb7
- 2.Sd3#
- 2.Qc3#
- 2.Qe4#
- 1...Rd7
- 2.Sxd7#
- 2.Qe4#
- 1...Sd6
- 2.Qc3#
- 2.Qb2#
- 1...a3
- 2.Sd3#
- 2.Qc3#
- 2.Qe4#
- 1...Ra7+!
- threat
- 1.Bb3?
- threat
- 2.Rc5#
- 1...Rxb7
- 2.Re6#
- 1...Qc1
- 2.Rf5#
- 1...Qd2
- 2.Rf5#
- 1...Qe3
- 2.Rf5#
- 1...Qf4
- 2.Qxf4#
- 1...Qf6
- 2.Re1#
- 1...Qh6
- 2.Rf5#
- 1...Qf5
- 2.Rxf5#
- 1...Qg6
- 2.Qf4#
- 1...Re6
- 2.Rxe6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Re6#
- 1...axb3!
- threat
- 1.Rf4?
- threat
- 2.Sf3#
- 2.Qd4#
- 2.Qe4#
- 1...Qxh4
- 2.Rf5#
- 2.Qd4#
- 2.Qe4#
- 1...Rxe6
- 2.Qd4#
- 2.Qe4#
- 1...Qf5
- 2.Rxf5#
- 2.Qd4#
- 1...Sd6
- 2.Qxd6#
- 1...Qg4
- 2.Qd4#
- 2.Qe4#
- 1...Qg6
- 2.Sf3#
- 2.Qd4#
- 1...Rd7
- 2.Sf3#
- 2.Qe4#
- 1...Qxf4!
- threat
- 1.Qe1+?
- 1...Qe3
- 2.Qxe3#
- 1...Kd4!
- 1...Qe3
- 1.Qc4?
- threat
- 2.Rc5#
- 2.Qd5#
- 1...Rxe6
- 2.Rxe6#
- 1...Rxb7
- 2.Qd5#
- 1...Qf4
- 2.Qxf4#
- 1...Qf5
- 2.Rxf5#
- 1...Qd2
- 2.Rf5#
- 1...Qe3
- 2.Rf5#
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 1...Rd7!
- threat
- 1.Sg6+?
- Keys
- 1.Ba2!
- threat
- 2.Rc5#
- 1...Rxb7
- 2.Re6#
- 1...Qc1
- 2.Rf5#
- 1...Qd2
- 2.Rf5#
- 1...Qe3
- 2.Rf5#
- 1...Qf4
- 2.Qxf4#
- 1...Qf6
- 2.Re1#
- 1...Qh6
- 2.Rf5#
- 1...Qf5
- 2.Rxf5#
- 1...Qg6
- 2.Qf4#
- 1...Re6
- 2.Rxe6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Re6#
- threat
- 1.Ba2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(d);N_GUARD::R1(A)
- Q(d);N_GUARD::QAB1(B),XQ(d)
- Q(d);N_GUARD,XS(C)::R1(A)
- Q(d);N_GUARD,SBLOCK::R(A)
- Q(d);N_GUARD::R1(A),XQ(d)
- Q(d);N_GUARD::QAB1(B)
- B(h);SBLOCK::S(C)
- Tries
- Try
- S(C);CHECK
- Vars
- Q(d);XS(C)::QAB1(B)
- Refutation
- P(i);XS(C)
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- R(f);P_PINR(E),XB(F)::QAR1(B)
- Q(d);N_GUARD::QAB1(B),XQ(d)
- Q(d);N_GUARD::R1(A)
- Q(d);::S(G)
- Refutation
- R(f);CHECK
- Try
- B(F);
- Threat
- R(E)
- Vars
- R(f);N_GUARD,XS(G)::R1(E)
- Q(d);N_GUARD::R1(A)
- Q(d);N_GUARD::QAB1(B),XQ(d)
- Q(d);N_GUARD,P_PINR(E)::R(A)
- Q(d);N_GUARD,P_PINR(E)::R1(A)
- Q(d);N_GUARD::R1(A),XQ(d)
- Q(d);N_GUARD,P_PINR(E)::QAB1(B)
- R(f);N_GUARD,P_PINR(E)::R1(E),XR(f)
- R(f);N_GUARD::R1(E)
- Refutation
- P(b);XB(F)
- Try
- R(A);
- Threat
- DUALS(3)
- Vars
- S(g);N_GUARD::QAB1(B),XS(g)
- Refutation
- Q(d);XR(A)
- Try
- Q(B);CHECK
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::QAR2(B),XQ(d)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(f);OGATE,P_PINR(E),XB(F)::R1(E),XR(f)
- R(f);XS(G)::QAR1(B)
- Q(d);N_GUARD::QAB1(B),XQ(d)
- Q(d);N_GUARD::R1(A),XQ(d)
- Q(d);N_GUARD::R1(A)
- R(f);::QAR1(B)
- Refutation
- R(f);
- Try
- Actual
- B(F);
- Threat
- R(E)
- Vars
- R(f);N_GUARD,XS(G)::R1(E)
- Q(d);N_GUARD::R1(A)
- Q(d);N_GUARD::QAB1(B),XQ(d)
- Q(d);N_GUARD,P_PINR(E)::R(A)
- Q(d);N_GUARD,P_PINR(E)::R1(A)
- Q(d);N_GUARD::R1(A),XQ(d)
- Q(d);N_GUARD,P_PINR(E)::QAB1(B)
- R(f);N_GUARD,P_PINR(E)::R1(E),XR(f)
- R(f);N_GUARD::R1(E)
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).