MESON Chess Problem Database
Problem Display
PID: 198707 (4RnKB/p3rQ2/2N5/1Bp5/8/kN4p1/q1p5/Rb4r1 w - - 0 1)
Ellerman, Arnoldo
L'Alfiere di Re, 1921
#2
8 + 10
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Tries
- 1.Sc1?
- threat
- 2.Qb3#
- 1...Rxf7
- 2.Re3#
- 1...Re3
- 2.Rxe3#
- 1...Re6
- 2.Qxa7#
- 1...Se6
- 2.Qf3#
- 1...c4
- 2.Qxe7#
- 1...Rxc1!
- threat
- 1.Sxc5?
- threat
- 2.Qb3#
- 1...Rxf7
- 2.Re3#
- 1...Re3
- 2.Rxe3#
- 1...Re6
- 2.Qxa7#
- 1...Se6
- 2.Qf3#
- 1...c1S!
- threat
- 1.Sc1?
- Keys
- 1.Sd2!
- threat
- 2.Qb3#
- 1...Rxf7
- 2.Re3#
- 1...c1S
- 2.Sxb1#
- 1...Re3
- 2.Rxe3#
- 1...Re6
- 2.Qxa7#
- 1...Se6
- 2.Qf3#
- 1...c4
- 2.Qxe7#
- threat
- 1.Sd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(B);P_SPINQ(E)
- Threat
- QAR1(E)
- Vars
- R(i);OGATE,XQ(E)::R(F)
- R(i);OGATE::R(F),XR(i)
- R(i);N_PINQ(E)::QAR(E),XP(h)
- S(j);N_PINQ(E)::QAR(E)
- P(g);N_PINQ(E)::QAB(E),XR(i)
- Refutation
- R(b);XS(B)
- Try
- S(B);P_SPINQ(E),XP(g)
- Threat
- QAR1(E)
- Vars
- R(i);OGATE,XQ(E)::R(F)
- R(i);OGATE::R(F),XR(i)
- R(i);N_PINQ(E)::QAR(E),XP(h)
- S(j);N_PINQ(E)::QAR(E)
- Refutation
- P(d);
- Try
- Actual
- S(B);P_SPINQ(E)
- Threat
- QAR1(E)
- Vars
- R(i);OGATE,XQ(E)::R(F)
- P(d);N_GUARD,S_CUTR(b)::S(B),XB(a)
- R(i);OGATE::R(F),XR(i)
- R(i);N_PINQ(E)::QAR(E),XP(h)
- S(j);N_PINQ(E)::QAR(E)
- P(g);N_PINQ(E)::QAB(E),XR(i)
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).