MESON Chess Problem Database
Problem Display
PID: 11807 (rkr5/p1p2Q2/K3p3/p7/6R1/1p6/7R/8 w - - 0 1)
Hoek, Willem
Jaarboek, 1972
#2
4 + 8
SOLUTION
- SOUND
- Sets
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...b2
- 2.Rxb2#
- 1...a4
- 2.Rb4#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Re8
- Tries
- 1.Rc2?
- 1...Rd8
- 2.Qxc7#
- 1...Re8
- 2.Qxe8#
- 2.Qxc7#
- 1...Rf8
- 2.Qxc7#
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qxg8#
- 2.Qxc7#
- 1...Rh8
- 2.Qxc7#
- 1...b2
- 2.Rxb2#
- 1...a4
- 2.Rb4#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...bxc2!
- 1...Rd8
- 1.Rd2?
- 1...Rd8
- 2.Rxd8#
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qxg8#
- 1...b2
- 2.Rxb2#
- 1...a4
- 2.Rb4#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rh8!
- 1...Rd8
- 1.Rh3?
- threat
- 2.Rxb3#
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...b2
- 2.Rb3#
- 1...a4
- 2.Rb4#
- 1...Rd8!
- threat
- 1.Rh5?
- threat
- 2.Rb5#
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rd8!
- threat
- 1.Rh7?
- 1...Rd8
- 2.Qxc7#
- 1...Re8
- 2.Qxe8#
- 2.Qxc7#
- 1...Rf8
- 2.Qxc7#
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qxg8#
- 2.Qxc7#
- 1...Rh8
- 2.Rxh8#
- 2.Qxc7#
- 1...a4
- 2.Rb4#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...b2!
- 1...Rd8
- 1.Ra4?
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...b2
- 2.Rxb2#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rd8!
- 1...Re8
- 1.Rc4?
- 1...Rd8
- 2.Qxc7#
- 1...Re8
- 2.Qxe8#
- 2.Qxc7#
- 1...Rf8
- 2.Qxc7#
- 2.Qxf8#
- 1...Rg8
- 2.Qxg8#
- 2.Qxc7#
- 1...Rh8
- 2.Rxh8#
- 2.Qxc7#
- 1...b2
- 2.Rxb2#
- 1...a4
- 2.Rb4#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...e5!
- 1...Rd8
- 1.Re4?
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...b2
- 2.Rxb2#
- 1...a4
- 2.Rb4#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rd8!
- 1...Re8
- 1.Rf4?
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...b2
- 2.Rxb2#
- 1...a4
- 2.Rb4#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rd8!
- 1...Re8
- 1.Rgh4?
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...b2
- 2.Rxb2#
- 1...a4
- 2.Rb4#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rd8!
- 1...Re8
- 1.Rg5?
- threat
- 2.Rb5#
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rd8!
- threat
- 1.Rg7?
- 1...Rd8
- 2.Qxc7#
- 1...Re8
- 2.Qxe8#
- 2.Qxc7#
- 1...Rf8
- 2.Qxc7#
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qxg8#
- 2.Qxc7#
- 1...Rh8
- 2.Rxh8#
- 2.Qxc7#
- 1...b2
- 2.Rxb2#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...a4!
- 1...Rd8
- 1.Rg8?
- 1...Rxg8
- 2.Qxg8#
- 1...Rd8
- 2.Rxd8#
- 1...Re8
- 2.Rxe8#
- 2.Qxe8#
- 1...Rf8
- 2.Rxf8#
- 2.Qxf8#
- 1...b2
- 2.Rxb2#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...a4!
- 1...Rxg8
- 1.Qf3?
- threat
- 2.Qb7#
- 2.Qxb3#
- 1...Rd8
- 2.Qb7#
- 1...Re8
- 2.Qb7#
- 1...Rf8
- 2.Qb7#
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 2.Qb7#
- 1...Rh8
- 2.Rxh8#
- 2.Qb7#
- 1...c5
- 2.Qb7#
- 1...a4
- 2.Rb4#
- 2.Qb7#
- 1...b2
- 2.Rxb2#
- 2.Qb7#
- 2.Qb3#
- 1...c6!
- threat
- 1.Qd7?
- threat
- 2.Qb5#
- 1...Rd8
- 2.Qxd8#
- 1...Re8
- 2.Qxe8#
- 1...Rg8
- 2.Rxg8#
- 1...Rh8
- 2.Rxh8#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rf8!
- threat
- 1.Qe7?
- 1...Rd8
- 2.Qxd8#
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Rxg8#
- 1...Rh8
- 2.Rxh8#
- 1...a4
- 2.Rb4#
- 2.Qb4#
- 1...b2
- 2.Rxb2#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...e5!
- 1...Rd8
- 1.Rc2?
- Keys
- 1.Rd4!
- 1...Rd8
- 2.Rxd8#
- 1...Re8
- 2.Qxe8#
- 1...Rf8
- 2.Qxf8#
- 1...Rg8
- 2.Qxg8#
- 1...Rh8
- 2.Rxh8#
- 1...b2
- 2.Rxb2#
- 1...a4
- 2.Rb4#
- 1...e5
- 2.Qxb3#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qb7#
- 1...Rd8
- 1.Rd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(b);N_GUARD::R(B)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Tries
- Try
- R(A);
- Vars
- R(h);N_GUARD::QAB1(D),XP(e)
- P(a);OGATEB::R(A),XP(a)
- P(b);N_GUARD::R(B)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- P(a);XR(A)
- Try
- R(A);
- Vars
- R(h);OGATEB::R(A),XR(h)
- R(h);OGATEB::QAR(D),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(b);N_GUARD::R(B)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- R(h);
- Try
- R(A);
- Threat
- R(A),XP(a)
- Vars
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(a);::R(A)
- P(b);N_GUARD::R(B)
- Refutation
- R(h);
- Try
- R(A);
- Threat
- R(A)
- Vars
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- R(h);
- Try
- R(A);
- Vars
- R(h);N_GUARD::QAB1(D),XP(e)
- P(b);N_GUARD::R(B)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- P(a);
- Try
- R(B);
- Vars
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- R(h);
- Try
- R(B);
- Vars
- R(h);N_GUARD::QAB1(D),XP(e)
- P(a);OGATEB::R(A),XP(a)
- P(b);N_GUARD::R(B)
- P(e);OGATE::QAR1(D)
- Refutation
- P(c);
- Try
- R(B);
- Vars
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(b);N_GUARD::R(B)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- R(h);
- Try
- R(B);
- Vars
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(b);N_GUARD::R(B)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- R(h);
- Try
- R(B);
- Vars
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(B),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(b);N_GUARD::R(B)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- R(h);
- Try
- R(B);
- Threat
- R(B)
- Vars
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- R(h);
- Try
- R(B);
- Vars
- R(h);N_GUARD::QAB1(D),XP(e)
- P(a);OGATEB::R(A),XP(a)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- P(b);
- Try
- R(B);P_PINR(h)
- Vars
- R(h);N_SPINR(h),OGATE,XR(B)::QAR(D),XR(h)
- R(h);OGATEB::R(B),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- P(b);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(h);::QAR1(D)
- P(e);::QAR1(D)
- Refutation
- P(e);
- Try
- Q(D);
- Threat
- QAR(D)
- Vars
- R(h);OGATEB::QAR2(D),XR(h)
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(B),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(e);OGATE::QAR1(D)
- Refutation
- R(h);
- Try
- Q(D);
- Vars
- R(h);OGATEB::QAR2(D),XR(h)
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(B),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(e);OGATE::QAR1(D)
- Refutation
- P(c);
- Try
- Actual
- R(B);
- Vars
- R(h);OGATEB::R(B),XR(h)
- R(h);OGATEB::QAR(D),XR(h)
- R(h);OGATEB::R(A),XR(h)
- P(a);OGATEB::R(A),XP(a)
- P(b);N_GUARD::R(B)
- P(c);OGATE::QAR(D),XP(a)
- P(e);OGATE::QAR1(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).