MESON Chess Problem Database
Problem Display
PID: 202334 (nr6/p2R2p1/pk1p2K1/N1R5/4p1p1/B3Q1q1/1n1P1P1b/1b3r2 w - - 0 1)
Mari, Alberto
L'Alfiere di Re, 1923
#2
8 + 14
| 5454 | Near Snap | 2020 |
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxf2
- 2.Qb3#
- 1...Qf4
- 2.Qb3#
- 1...Qh4
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Qb3#
- 1...Qe5
- 2.Rxe5#
- 2.Qb3#
- 1...Qg1
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Qb3#
- 1...Qg2
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Qb3#
- 1...Rb7
- 2.Rxb7#
- 1...Rc8
- 2.Rb7#
- 1...Rd8
- 2.Rb7#
- 1...Re8
- 2.Rb7#
- 1...Rf8
- 2.Rb7#
- 1...Rg8
- 2.Rb7#
- 1...Rh8
- 2.Rb7#
- 1...Sd1
- 2.Sc4#
- 1...Sd3
- 2.Sc4#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...dxc5
- 2.Qxc5#
- 1...Qxf2
- Tries
- 1.Rdc7?
- threat
- 2.R7c6#
- 1...dxc5
- 2.Qxc5#
- 1...Rc8
- 2.Rb7#
- 1...Sxc7!
- threat
- 1.fxg3?
- threat
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rxd6#
- 2.Qb3#
- 1...Bxg3
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Qb3#
- 1...dxc5
- 2.Qxc5#
- 1...Rc1
- 2.Rxd6#
- 2.Qb3#
- 1...Re1
- 2.Rxd6#
- 2.Qb3#
- 1...Rf3
- 2.Rxd6#
- 1...Rf5
- 2.Rd5#
- 2.Re5#
- 2.Rxf5#
- 2.Rxd6#
- 2.Qb3#
- 1...Rc8
- 2.Rb7#
- 2.Qb3#
- 1...Rd8
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rb7#
- 2.Qb3#
- 1...Ba2
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rxd6#
- 1...Bc2
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rxd6#
- 1...Bd3
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rxd6#
- 1...Bg1
- 2.Rxd6#
- 2.Qb3#
- 1...Sd1
- 2.Sc4#
- 2.Rxd6#
- 2.Qb3#
- 1...Sd3
- 2.Sc4#
- 2.Rxd6#
- 1...Sa4
- 2.Sc4#
- 2.Rxd6#
- 2.Qb3#
- 1...Sc4
- 2.Sxc4#
- 2.Qb3#
- 1...Sc7
- 2.Rd5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rxd6#
- 1...d5
- 2.Rcxd5#
- 2.Rd6#
- 2.Qb3#
- 1...Rf6+!
- threat
- 1.Rdc7?
- Keys
- 1.f4!
- threat
- 2.Rxd6#
- 1...exf4 ep+
- 2.Rf5#
- 1...gxf4 ep+
- 2.Rg5#
- 1...Qxf4
- 2.Qb3#
- 1...dxc5
- 2.Qxc5#
- 1...Rc8
- 2.Rb7#
- 1...Rd8
- 2.Rb7#
- 1...Sc4
- 2.Sxc4#
- 1...d5
- 2.Rd6#
- threat
- 1.f4!
This anticipates 11252(1937)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(e);N_GUARD,XP(B)::QAR(D)
- Q(e);N_GUARD::QAR(D)
- R(n);N_GUARD::R1(H),XR(n)
- R(n);N_GUARD::R1(H)
- S(c);N_GUARD::S(E)
- S(c);N_GUARD::S(E),XS(c)
- P(j);OGATE,P_SPINP(j),XR(F)::QAB1(D),XP(j)
- Tries
- Try
- R(H);
- Threat
- R1(H)
- Vars
- P(j);OGATE,P_SPINP(j),XR(F)::QAB1(D),XP(j)
- R(n);N_GUARD::R1(H)
- Refutation
- S(m);XR(H)
- Try
- P(B);XQ(e)
- Threat
- DUALS(7)
- Vars
- P(j);OGATE,P_SPINP(j),XR(F)::QAB1(D),XP(j)
- R(b);::R(H),XP(j)
- Refutation
- R(b);CHECK
- Try
- Actual
- P(B);
- Threat
- R(H),XP(j)
- Vars
- P(f);CHECK,EP,S_CUTQ(e),XP(B)::QAB(D)+R(F)
- P(g);CHECK,EP,S_CUTQ(e),XP(B)::QAB(D)+R(F)
- Q(e);N_GUARD,XP(B)::QAR(D)
- P(j);OGATE,P_SPINP(j),XR(F)::QAB1(D),XP(j)
- R(n);N_GUARD::R1(H)
- S(c);N_GUARD::S(E),XS(c)
- P(j);::R(H)
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).