MESON Chess Problem Database
Problem Display
PID: 47463 (8/8/4rR2/4Qbp1/5b2/8/2N2BR1/r4k1K w - - 0 1)
Lipton, Michael
The Problemist, 1998
#2
6 + 6
| 56 | The Problemist | 2003 |
| 56 | The Problemist | 2008 |
| 56 | The Problemist | 2014 |
| 56 | The Problemist | 2017 |
SOLUTION
- SOUND
- Tries
- 1.Bg1?
- threat
- 2.Rf2#
- 1...Be3
- 2.Qb5#
- 1...Be4
- 2.Qxa1#
- 1...Bg3!
- threat
- 1.Be3?
- threat
- 2.Rf2#
- 2.Qxa1#
- 1...Rxe5
- 2.Rf2#
- 1...Bxe3
- 2.Qb5#
- 1...Bxe5
- 2.Rf2#
- 1...Rb1
- 2.Rf2#
- 1...Rc1
- 2.Rf2#
- 1...Rd1
- 2.Rf2#
- 1...Re1
- 2.Rf2#
- 1...Ra2
- 2.Rf2#
- 1...Ra3
- 2.Rf2#
- 1...Ra4
- 2.Rf2#
- 1...Ra5
- 2.Rf2#
- 1...Raa6
- 2.Rf2#
- 1...Ra7
- 2.Rf2#
- 1...Ra8
- 2.Rf2#
- 1...Rea6
- 2.Rf2#
- 1...Rb6
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Bg3
- 2.Qb5#
- 1...Be4
- 2.Qxa1#
- 1...Bg4
- 2.Rf2#
- 1...Bxc2!
- threat
- 1.Bg3?
- threat
- 2.Rg1#
- 2.Rf2#
- 1...Rxe5
- 2.Rf2#
- 1...Bxe5
- 2.Se3#
- 2.Rf2#
- 1...Be3
- 2.Sxe3#
- 2.Qb5#
- 1...Be4
- 2.Se3#
- 2.Qxa1#
- 1...Bxg3!
- threat
- 1.Bd4?
- threat
- 2.Rg1#
- 2.Rf2#
- 1...Rxe5
- 2.Rf2#
- 1...Bxe5
- 2.Rf2#
- 1...Bh2
- 2.Rf2#
- 1...Be3
- 2.Qb5#
- 1...Bg3
- 2.Rg1#
- 1...Be4!
- threat
- 1.Bh4?
- threat
- 2.Rg1#
- 2.Rf2#
- 1...Rxe5
- 2.Rf2#
- 1...Bxe5
- 2.Se3#
- 2.Rf2#
- 1...gxh4
- 2.Qxf4#
- 1...Be4
- 2.Se3#
- 2.Qxa1#
- 1...Bh2
- 2.Se3#
- 2.Rf2#
- 1...Be3
- 2.Sxe3#
- 2.Qb5#
- 1...Bg3!
- threat
- 1.Bc5?
- threat
- 2.Rg1#
- 2.Rf2#
- 1...Rxe5
- 2.Rf2#
- 1...Bxe5
- 2.Rf2#
- 1...Be4
- 2.Qxa1#
- 1...Bh2
- 2.Rf2#
- 1...Bg3
- 2.Rg1#
- 1...Be3!
- threat
- 1.Ba7?
- threat
- 2.Rg1#
- 2.Rf2#
- 1...Rxe5
- 2.Rf2#
- 1...Bxe5
- 2.Rf2#
- 1...Be4
- 2.Qxa1#
- 1...Rb6
- 2.Qe2#
- 1...Bh2
- 2.Rf2#
- 1...Be3
- 2.Qb5#
- 1...Bg3
- 2.Rg1#
- 1...Rxa7!
- threat
- 1.Bg1?
- Keys
- 1.Bb6!
- threat
- 2.Rg1#
- 2.Rf2#
- 1...Rxe5
- 2.Rf2#
- 1...Rxb6
- 2.Qe2#
- 1...Bxe5
- 2.Rf2#
- 1...Be4
- 2.Qxa1#
- 1...Bh2
- 2.Rf2#
- 1...Be3
- 2.Qb5#
- 1...Bg3
- 2.Rg1#
- threat
- 1.Bb6!
This is after 21161
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Tries
- Try
- B(C);
- Threat
- R1(D)
- Vars
- B(c);P_SPINB(d),S_CUTR(f)::QAB(E)
- B(d);P_PINR(D),P_SPINB(c),S_CUTR(f)::QAR(E),XR(a)
- Refutation
- B(c);P_SPINB(d)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(E)::R1(D)
- B(c);P_SPINB(d),XB(C)::QAB(E)
- B(c);P_SPINB(d),XQ(E)::R1(D)
- R(a);::R1(D)
- R(f);::R1(D)
- B(c);P_SPINB(d)::QAB(E)
- B(d);P_PINR(D),P_SPINB(c)::QAR(E),XR(a)
- B(d);P_SPINB(c)::R1(D)
- Refutation
- B(d);P_SPINB(c),XS(B)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(E)::R1(D)
- Refutation
- B(c);P_SPINB(d),XB(C)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(E)::R1(D)
- B(c);P_SPINB(d),XQ(E)::R1(D)
- B(c);P_SPINB(d)::R1(D)
- B(c);P_SPINB(d),S_CUTR(f)::QAB(E)
- Refutation
- B(d);P_PINR(D),P_SPINB(c)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(E)::R1(D)
- P(e);N_GUARD,XB(C)::QAR(E),XB(c)
- Refutation
- B(c);P_SPINB(d)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(E)::R1(D)
- B(c);P_SPINB(d),XQ(E)::R1(D)
- B(d);P_PINR(D),P_SPINB(c),S_CUTR(f)::QAR(E),XR(a)
- B(c);P_SPINB(d)::R1(D)
- Refutation
- B(c);P_SPINB(d)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(E)::R1(D)
- B(c);P_SPINB(d),XQ(E)::R1(D)
- B(d);P_PINR(D),P_SPINB(c),S_CUTR(f)::QAR(E),XR(a)
- R(f);N_GUARD::QAB1(E)
- B(c);P_SPINB(d)::R1(D)
- B(c);P_SPINB(d),S_CUTR(f)::QAB(E)
- Refutation
- R(a);XB(C)
- Try
- Actual
- B(C);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(E)::R1(D)
- R(f);N_GUARD,XB(C)::QAB1(E)
- B(c);P_SPINB(d),XQ(E)::R1(D)
- B(d);P_PINR(D),P_SPINB(c),S_CUTR(f)::QAR(E),XR(a)
- B(c);P_SPINB(d)::R1(D)
- B(c);P_SPINB(d),S_CUTR(f)::QAB(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).