MESON Chess Problem Database
Problem Display
PID: 76366 (R2K1k1N/1ppPp2Q/6r1/1r6/8/5q2/7b/1b3R2 w - - 0 1)
Heyl, Peter
Troll, 2007
#2
6 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Sxg6#
- 1...Qf7
- 2.Rxf7#
- 2.Qxf7#
- 1...Re5
- 2.Kxc7#
- 1...Rf5
- 2.Sxg6#
- 1...Rg3
- 2.Kxc7#
- 1...Rd6
- 2.Kxc7#
- 1...Rg8
- 2.Qxe7#
- 1...Ba2
- 2.Sxg6#
- 1...Bf5
- 2.Qf7#
- 1...Bg1
- 2.Kxc7#
- 1...Bf4
- 2.Qf7#
- 1...e5
- 2.Kxc7#
- 1...Qf5
- Tries
- 1.Rxf3+?
- 1...Rf5
- 2.Sxg6#
- 1...Bf5
- 2.Sxg6#
- 2.Qf7#
- 1...Bf4
- 2.Qf7#
- 1...Rf6!
- 1...Rf5
- 1.Rxf3+?
- Keys
- 1.Kc8!
- threat
- 2.d8Q#
- 2.d8R#
- 1...Qxf1
- 2.d8Q#
- 2.d8R#
- 1...Qf2
- 2.d8Q#
- 2.d8R#
- 1...Qf4
- 2.d8Q#
- 2.d8R#
- 1...Qf5
- 2.Sxg6#
- 1...Qf6
- 2.d8Q#
- 2.d8R#
- 1...Qf7
- 2.Rxf7#
- 2.Qxf7#
- 2.d8Q#
- 2.d8R#
- 1...Rb2
- 2.d8Q#
- 2.d8R#
- 1...Rb3
- 2.d8Q#
- 2.d8R#
- 1...Rb4
- 2.d8Q#
- 2.d8R#
- 1...Ra5
- 2.d8Q#
- 2.d8R#
- 1...Rc5
- 2.d8Q#
- 2.d8R#
- 1...Rd5
- 2.Kxb7#
- 1...Re5
- 2.Kxc7#
- 2.d8Q#
- 2.d8R#
- 1...Rf5
- 2.Sxg6#
- 2.d8Q#
- 2.d8R#
- 1...Rbg5
- 2.d8Q#
- 2.d8R#
- 1...Rh5
- 2.d8Q#
- 2.d8R#
- 1...Rbb6
- 2.d8Q#
- 2.d8R#
- 1...Rg1
- 2.d8Q#
- 2.d8R#
- 1...Rg2
- 2.d8Q#
- 2.d8R#
- 1...Rg3
- 2.Kxc7#
- 2.d8Q#
- 2.d8R#
- 1...Rg4
- 2.d8Q#
- 2.d8R#
- 1...Rgg5
- 2.d8Q#
- 2.d8R#
- 1...Ra6
- 2.d8Q#
- 2.d8R#
- 1...Rgb6
- 2.d8Q#
- 2.d8R#
- 1...Rc6
- 2.d8Q#
- 2.d8R#
- 1...Rd6
- 2.Kxc7#
- 1...Re6
- 2.d8Q#
- 2.d8R#
- 1...Rf6
- 2.d8Q#
- 2.d8R#
- 1...Rh6
- 2.d8Q#
- 2.d8R#
- 1...Rg7
- 2.d8Q#
- 2.d8R#
- 1...Rg8
- 2.d8Q#
- 2.d8R#
- 1...Ba2
- 2.Sxg6#
- 2.d8Q#
- 2.d8R#
- 1...Bc2
- 2.d8Q#
- 2.d8R#
- 1...Bd3
- 2.d8Q#
- 2.d8R#
- 1...Be4
- 2.d8Q#
- 2.d8R#
- 1...Bf5
- 2.Qf7#
- 1...Bg1
- 2.Kxc7#
- 2.d8Q#
- 2.d8R#
- 1...Bg3
- 2.d8Q#
- 2.d8R#
- 1...Bf4
- 2.Qf7#
- 2.d8Q#
- 2.d8R#
- 1...Be5
- 2.d8Q#
- 2.d8R#
- 1...Bd6
- 2.d8Q#
- 2.d8R#
- 1...b6
- 2.d8Q#
- 2.d8R#
- 1...c5
- 2.d8Q#
- 2.d8R#
- 1...c6
- 2.d8Q#
- 2.d8R#
- 1...e5
- 2.Kxc7#
- 2.d8Q#
- 2.d8R#
- 1...e6
- 2.d8Q#
- 2.d8R#
- threat
- 1.Kc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- Q(c);S_CUTB(a)::S(F),XR(e)
- R(d);::R(D)+K(E),XP(g)
- R(d);N_SPINQ(c),S_CUTB(a)::S(F),XR(e)
- R(e);::R(D)+K(E),XP(g)
- R(e);P_PINP(B)::R(D)+K(E),XP(g)
- R(e);SBLOCK::QAB1(C),XP(h)
- B(a);N_GUARD::S(F),XR(e)
- B(a);N_SPINQ(c),S_CUTQ(c)::QAR1(C)
- B(b);::R(D)+K(E),XP(g)
- B(b);N_SPINQ(c),S_CUTQ(c)::QAR1(C)
- P(h);::R(D)+K(E),XP(g)
- Tries
- Try
- R(A);CHECK,XQ(c)
- Vars
- R(d);P_SPINR(d)::S(F),XR(e)
- B(b);P_SPINB(b)::QAR1(C)
- Refutation
- R(e);P_SPINR(e)
- Try
- Actual
- K(E);P-FLIGHT
- Threat
- P=Q
- Vars
- Q(c);N_SPINQ(c),XR(A)::P=Q
- Q(c);::P=Q
- Q(c);P_PINP(B),S_CUTB(a)::S(F),XR(e)
- R(d);::P=Q
- R(d);::R(D)+K(E),XP(f)
- R(e);::P=Q
- R(e);::R(D)+K(E),XP(g)
- R(e);N_SPINQ(c)::P=Q
- B(a);::P=Q
- B(a);N_SPINQ(c),P_PINP(B),S_CUTQ(c)::QAR1(C)
- B(b);::P=Q
- P(f);::P=Q
- P(g);::P=Q
- P(h);::P=Q
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).