MESON Chess Problem Database
Problem Display
PID: 81052 (K1k5/nRB2N2/8/2b5/2bQ3p/8/2R5/3r4 w - - 0 1)
Shire, David J
The Problemist, 2008
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qd8#
- 1...Rb1
- 2.Qd8#
- 1...Rc1
- 2.Qd8#
- 1...Re1
- 2.Qd8#
- 1...Rf1
- 2.Qd8#
- 1...Rg1
- 2.Qd8#
- 1...Rh1
- 2.Qd8#
- 1...Bd3
- 2.Qd8#
- 1...Ra1
- Tries
- 1.Bg3?
- threat
- 2.Rc7#
- 2.Rb8#
- 1...Rxd4
- 2.Rc7#
- 1...Bxd4
- 2.Rc7#
- 1...Rb1
- 2.Rc7#
- 2.Qd7#
- 2.Qd8#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- 1...Sb5
- 2.Rb8#
- 1...Sc6
- 2.Rc7#
- 1...hxg3!
- threat
- 1.Bf4?
- threat
- 2.Rc7#
- 2.Rb8#
- 1...Rxd4
- 2.Rc7#
- 1...Bxd4
- 2.Rc7#
- 1...Rb1
- 2.Rc7#
- 2.Qd7#
- 2.Qd8#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Rb8#
- 1...Sb5
- 2.Rb8#
- 1...Sc6
- 2.Rc7#
- 1...Bd6!
- threat
- 1.Ba5?
- threat
- 2.Rc7#
- 2.Rb8#
- 1...Rxd4
- 2.Rc7#
- 1...Bxd4
- 2.Sd6#
- 2.Rc7#
- 1...Rb1
- 2.Rc7#
- 2.Qd7#
- 2.Qd8#
- 1...Bd5
- 2.Sd6#
- 2.Qh8#
- 1...Bd6
- 2.Sxd6#
- 2.Qg4#
- 1...Sb5
- 2.Rb8#
- 1...Sc6
- 2.Rc7#
- 1...Bb6!
- threat
- 1.Be5?
- threat
- 2.Rc7#
- 2.Rb8#
- 1...Rxd4
- 2.Rc7#
- 1...Bxd4
- 2.Rc7#
- 1...Rb1
- 2.Rc7#
- 2.Qd7#
- 2.Qd8#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- 1...Sb5
- 2.Rb8#
- 1...Sc6
- 2.Rc7#
- 1...Bd5!
- threat
- 1.Bb6?
- threat
- 2.Rc7#
- 2.Rb8#
- 1...Rxd4
- 2.Rc7#
- 1...Bxd4
- 2.Sd6#
- 2.Rc7#
- 1...Bd5
- 2.Sd6#
- 2.Qh8#
- 1...Bd6
- 2.Sxd6#
- 2.Qg4#
- 1...Sb5
- 2.Rb8#
- 1...Sc6
- 2.Rc7#
- 1...Bxb6!
- threat
- 1.Bd6?
- threat
- 2.Rc7#
- 2.Qh8#
- 1...Rxd4
- 2.Rc7#
- 1...Bxd4
- 2.Rc7#
- 1...Bxd6
- 2.Qg4#
- 1...Re1
- 2.Rc7#
- 1...Rg1
- 2.Rc7#
- 1...Bb5
- 2.Rc7#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Qg4#
- 1...Sb5
- 2.Qh8#
- 1...Sc6
- 2.Rc7#
- 1...Bxf7!
- threat
- 1.Bd8?
- threat
- 2.Rc7#
- 2.Rb8#
- 1...Rxd4
- 2.Rc7#
- 1...Bxd4
- 2.Rc7#
- 1...Bb6
- 2.Rb8#
- 1...Rb1
- 2.Rc7#
- 2.Qd7#
- 1...Bd6
- 2.Qg4#
- 1...Sb5
- 2.Rb8#
- 1...Sc6
- 2.Rc7#
- 1...Bd5!
- threat
- 1.Bg3?
- Keys
- 1.Bh2!
- threat
- 2.Rc7#
- 2.Rb8#
- 1...Rxd4
- 2.Rc7#
- 1...Bxd4
- 2.Rc7#
- 1...Rb1
- 2.Rc7#
- 2.Qd7#
- 2.Qd8#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- 1...Sb5
- 2.Rb8#
- 1...Sc6
- 2.Rc7#
- threat
- 1.Bh2!
This is a version of 21161
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::QAR1(B)
- B(b);S_CUTR(a)::QAR1(B)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(B)::R1(C)
- B(d);P_SPINB(b),XQ(B)::R1(C)
- B(b);P_PINR(C),P_SPINB(d),S_CUTR(a)::QAR(B)
- B(d);P_SPINB(b)::R1(C)
- B(d);P_SPINB(b),S_CUTR(a)::QAB(B)
- S(e);::R1(C)
- Refutation
- P(c);XB(D)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(B)::R1(C)
- B(d);P_SPINB(b),XQ(B)::R1(C)
- B(b);P_PINR(C),P_SPINB(d),S_CUTR(a)::QAR(B)
- B(d);P_SPINB(b)::R1(C)
- S(e);::R1(C)
- Refutation
- B(d);P_SPINB(b)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(B)::R1(C)
- S(e);::R1(C)
- Refutation
- B(d);P_SPINB(b)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(B)::R1(C)
- B(d);P_SPINB(b),XQ(B)::R1(C)
- B(d);P_SPINB(b)::R1(C)
- B(d);P_SPINB(b),S_CUTR(a)::QAB(B)
- S(e);::R1(C)
- Refutation
- B(b);P_PINR(C),P_SPINB(d)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(B)::R1(C)
- S(e);::R1(C)
- Refutation
- B(d);P_SPINB(b),XB(D)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(B)::R1(C)
- B(d);P_SPINB(b),XQ(B)::R1(C)
- B(d);P_SPINB(b),XB(D)::QAB(B)
- R(a);::R1(C)
- B(b);P_SPINB(d)::R1(C)
- B(b);P_PINR(C),P_SPINB(d)::QAR(B)
- B(d);P_SPINB(b)::QAB(B)
- S(e);::QAR(B)
- S(e);::R1(C)
- Refutation
- B(b);P_SPINB(d),XS(E)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(B)::R1(C)
- B(d);P_SPINB(b),XQ(B)::R1(C)
- B(d);P_SPINB(b)::R1(C)
- B(d);P_SPINB(b),S_CUTR(a)::QAB(B)
- S(e);::R1(C)
- Refutation
- B(b);P_PINR(C),P_SPINB(d)
- Try
- Actual
- B(D);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(B)::R1(C)
- B(d);P_SPINB(b),XQ(B)::R1(C)
- B(b);P_PINR(C),P_SPINB(d),S_CUTR(a)::QAR(B)
- B(d);P_SPINB(b)::R1(C)
- B(d);P_SPINB(b),S_CUTR(a)::QAB(B)
- S(e);::R1(C)
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).