MESON Chess Problem Database
Problem Display
PID: 51523 (k7/4R2P/1p6/1N3p2/2PK1BP1/2QP4/1P6/r6r w - - 0 1)
Barnes, Barry Peter
The Guardian, 1963
#2
10 + 5
SOLUTION
- SOUND
- Sets
- 1...Rab1
- 2.Ra7#
- 2.Qa3#
- 1...Rac1
- 2.Ra7#
- 2.Qa3#
- 1...Rad1
- 2.Ra7#
- 2.Qa3#
- 1...Rae1
- 2.Ra7#
- 2.Qa3#
- 1...Raf1
- 2.Ra7#
- 2.Qa3#
- 1...Rag1
- 2.Ra7#
- 2.Qa3#
- 1...Ra3
- 2.Qxa3#
- 1...Ra7
- 2.Rxa7#
- 1...Rhb1
- 2.h8Q#
- 2.h8R#
- 1...Rhc1
- 2.h8Q#
- 2.h8R#
- 1...Rhd1
- 2.h8Q#
- 2.h8R#
- 1...Rhe1
- 2.h8Q#
- 2.h8R#
- 1...Rhf1
- 2.h8Q#
- 2.h8R#
- 1...Rhg1
- 2.h8Q#
- 2.h8R#
- 1...Rab1
- Tries
- 1.Bh2?
- threat
- 2.h8Q#
- 2.h8R#
- 1...fxg4
- 2.h8Q#
- 2.h8R#
- 1...f4
- 2.h8Q#
- 2.h8R#
- 1...Rab1
- 2.Ra7#
- 2.Qa3#
- 2.h8Q#
- 2.h8R#
- 1...Rac1
- 2.Ra7#
- 2.Qa3#
- 2.h8Q#
- 2.h8R#
- 1...Rad1
- 2.Ra7#
- 2.Qa3#
- 2.h8Q#
- 2.h8R#
- 1...Rae1
- 2.Ra7#
- 2.Qa3#
- 2.h8Q#
- 2.h8R#
- 1...Raf1
- 2.Ra7#
- 2.Qa3#
- 2.h8Q#
- 2.h8R#
- 1...Rag1
- 2.Ra7#
- 2.Qa3#
- 2.h8Q#
- 2.h8R#
- 1...Ra2
- 2.h8Q#
- 2.h8R#
- 1...Ra3
- 2.Qxa3#
- 2.h8Q#
- 2.h8R#
- 1...Ra4
- 2.h8Q#
- 2.h8R#
- 1...Ra5
- 2.h8Q#
- 2.h8R#
- 1...Ra6
- 2.h8Q#
- 2.h8R#
- 1...Ra7
- 2.Rxa7#
- 2.h8Q#
- 2.h8R#
- 1...Rhb1
- 2.h8Q#
- 2.h8R#
- 1...Rhc1
- 2.h8Q#
- 2.h8R#
- 1...Rhd1
- 2.h8Q#
- 2.h8R#
- 1...Rhe1
- 2.h8Q#
- 2.h8R#
- 1...Rhf1
- 2.h8Q#
- 2.h8R#
- 1...Rhg1
- 2.h8Q#
- 2.h8R#
- 1...Rxh2!
- threat
- 1.Bh6?
- threat
- 2.h8Q#
- 2.h8R#
- 1...Kb8
- 2.h8Q#
- 2.h8R#
- 1...fxg4
- 2.h8Q#
- 2.h8R#
- 1...Rab1
- 2.h8Q#
- 2.h8R#
- 1...Rac1
- 2.h8Q#
- 2.h8R#
- 1...Rad1
- 2.h8Q#
- 2.h8R#
- 1...Rae1
- 2.h8Q#
- 2.h8R#
- 1...Raf1
- 2.h8Q#
- 2.h8R#
- 1...Rag1
- 2.h8Q#
- 2.h8R#
- 1...Ra2
- 2.h8Q#
- 2.h8R#
- 1...Ra3
- 2.h8Q#
- 2.h8R#
- 1...Ra4
- 2.h8Q#
- 2.h8R#
- 1...Ra5
- 2.h8Q#
- 2.h8R#
- 1...Ra6
- 2.h8Q#
- 2.h8R#
- 1...Ra7
- 2.h8Q#
- 2.h8R#
- 1...Rhb1
- 2.h8Q#
- 2.h8R#
- 1...Rhc1
- 2.h8Q#
- 2.h8R#
- 1...Rhd1
- 2.h8Q#
- 2.h8R#
- 1...Rhe1
- 2.h8Q#
- 2.h8R#
- 1...Rhf1
- 2.h8Q#
- 2.h8R#
- 1...Rhg1
- 2.h8Q#
- 2.h8R#
- 1...Rh2
- 2.h8Q#
- 2.h8R#
- 1...Rh3
- 2.h8Q#
- 2.h8R#
- 1...Rh4
- 2.h8Q#
- 2.h8R#
- 1...Rh5
- 2.h8Q#
- 2.h8R#
- 1...f4
- 2.h8Q#
- 2.h8R#
- 1...Rxh6!
- threat
- 1.Qa5+?
- 1...bxa5
- 2.Ra7#
- 1...Rxa5!
- 1...bxa5
- 1.Qc1?
- 1...Raxc1
- 2.Ra7#
- 1...Rhxc1
- 2.h8Q#
- 2.h8R#
- 1...Rxh7
- 2.Qxa1#
- 1...Rb1
- 2.Ra7#
- 1...Ra2
- 2.Qxh1#
- 1...Ra3
- 2.Qxh1#
- 1...Ra4
- 2.Qxh1#
- 1...Ra5
- 2.Qxh1#
- 1...Ra6
- 2.Qxh1#
- 1...Ra7
- 2.Rxa7#
- 1...Rd1
- 2.h8Q#
- 2.h8R#
- 1...Re1
- 2.h8Q#
- 2.h8R#
- 1...Rf1
- 2.h8Q#
- 2.h8R#
- 1...Rg1
- 2.h8Q#
- 2.h8R#
- 1...Rh2
- 2.Qxa1#
- 1...Rh3
- 2.Qxa1#
- 1...Rh4
- 2.Qxa1#
- 1...Rh5
- 2.Qxa1#
- 1...Rh6
- 2.Qxa1#
- 1...fxg4!
- 1...Raxc1
- 1.Bh2?
- Keys
- 1.Qe1!
- 1...Raxe1
- 2.Ra7#
- 1...Rhxe1
- 2.h8Q#
- 2.h8R#
- 1...Rxh7
- 2.Qxa1#
- 1...fxg4
- 2.Qe4#
- 1...Rb1
- 2.Ra7#
- 1...Rc1
- 2.Ra7#
- 1...Rd1
- 2.Ra7#
- 1...Ra2
- 2.Qxh1#
- 1...Ra3
- 2.Qxh1#
- 1...Ra4
- 2.Qxh1#
- 1...Ra5
- 2.Qxh1#
- 1...Ra6
- 2.Qxh1#
- 1...Ra7
- 2.Rxa7#
- 1...Rf1
- 2.h8Q#
- 2.h8R#
- 1...Rg1
- 2.h8Q#
- 2.h8R#
- 1...Rh2
- 2.Qxa1#
- 1...Rh3
- 2.Qxa1#
- 1...Rh4
- 2.Qxa1#
- 1...Rh5
- 2.Qxa1#
- 1...Rh6
- 2.Qxa1#
- 1...Raxe1
- 1.Qe1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 15
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::QAR(B),XR(a)
- R(a);N_GUARD::R1(I),XR(a)
- R(b);N_GUARD::P=Q
- R(b);N_GUARD,P_PINP(C)::P=Q
- Tries
- Try
- B(F);
- Threat
- P=Q
- Vars
- P(c);XP(G)::P=Q
- P(c);::P=Q
- R(a);::P=Q
- R(a);P_PINP(D)::P=Q
- R(b);::P=Q
- R(b);P_PINP(C)::P=Q
- Refutation
- R(b);XB(F)
- Try
- B(F);
- Threat
- P=Q
- Vars
- K(e);P-FLIGHT::P=Q
- P(c);XP(G)::P=Q
- R(a);::P=Q
- R(a);P_PINP(C)::P=Q
- R(a);P_PINP(D)::P=Q
- R(b);::P=Q
- R(b);P_PINP(C)::P=Q
- R(b);P_PINP(G)::P=Q
- P(c);::P=Q
- Refutation
- R(b);XB(F)
- Try
- Q(B);CHECK
- Vars
- P(d);XQ(B)::R1(I)
- Refutation
- R(a);XQ(B)
- Try
- Q(B);
- Vars
- R(a);N_GUARD,XQ(B)::R1(I)
- R(b);N_GUARD,XQ(B)::P=Q
- R(b);N_GUARD,XP(J)::QAB(B),XR(a)
- R(a);N_GUARD::R1(I)
- R(a);N_GUARD::QAB(B),XR(b)
- R(a);N_GUARD,P_PINP(D)::QAB(B),XR(b)
- R(a);N_GUARD::R1(I),XR(a)
- R(b);N_GUARD,P_PINP(C)::P=Q
- R(b);N_GUARD::P=Q
- R(b);N_GUARD::QAB(B),XR(a)
- Refutation
- P(c);XP(G)
- Try
- Actual
- Q(B);
- Vars
- R(a);N_GUARD,XQ(B)::R1(I)
- R(b);N_GUARD,XQ(B)::P=Q
- R(b);N_GUARD,XP(J)::QAB(B),XR(a)
- P(c);N_GUARD,XP(G)::QAB(B)
- R(a);N_GUARD::R1(I)
- R(a);N_GUARD,P_PINP(C)::R1(I)
- R(a);N_GUARD::QAB(B),XR(b)
- R(a);N_GUARD,P_PINP(D)::QAB(B),XR(b)
- R(a);N_GUARD::R1(I),XR(a)
- R(b);N_GUARD::P=Q
- R(b);N_GUARD::QAB(B),XR(a)
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).