MESON Chess Problem Database
Problem Display
PID: 76711 (4K2n/6p1/p1P1R3/3k1Pp1/1Q6/2r3N1/1B6/6b1 w - - 0 1)
Hasenzahl, Karl
3rd Prize, El Ajedrez Espanol, 1952
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Rd6#
- 1...Rc2
- 2.Rd6#
- 1...Ra3
- 2.Rd6#
- 1...Rb3
- 2.Rd6#
- 1...Rd3
- 2.Rd6#
- 1...Re3
- 2.Qd4#
- 1...Rf3
- 2.Rd6#
- 1...Rxg3
- 2.Rd6#
- 1...Rc4
- 2.Rd6#
- 2.Qd6#
- 1...Rc5
- 2.Qe4#
- 1...Rxc6
- 2.Re5#
- 1...Bc5
- 2.Qe4#
- 1...Rc1
- Tries
- 1.Se4?
- threat
- 2.Sxc3#
- 1...Rxc6
- 2.Re5#
- 1...Rc1
- 2.Rd6#
- 1...Rc2
- 2.Rd6#
- 1...Ra3
- 2.Rd6#
- 1...Rb3
- 2.Rd6#
- 2.Qxb3#
- 1...Rd3
- 2.Rd6#
- 1...Re3
- 2.Rd6#
- 2.Qc5#
- 2.Qd4#
- 1...Rf3
- 2.Rd6#
- 1...Rg3
- 2.Rd6#
- 1...Rh3
- 2.Rd6#
- 1...Rc4
- 2.Qd6#
- 1...Rc5
- 2.Rd6#
- 1...Bd4!
- threat
- 1.Bxc3?
- threat
- 2.Rd6#
- 1...Bd4
- 2.Qxd4#
- 1...Bc5
- 2.Qb3#
- 2.Qe4#
- 1...Sf7!
- threat
- 1.Se4?
- Keys
- 1.Se2!
- threat
- 2.Sxc3#
- 1...Rxc6
- 2.Re5#
- 1...Rc1
- 2.Rd6#
- 1...Rc2
- 2.Rd6#
- 1...Ra3
- 2.Rd6#
- 1...Rb3
- 2.Rd6#
- 1...Rd3
- 2.Rd6#
- 1...Re3
- 2.Qd4#
- 1...Rf3
- 2.Rd6#
- 1...Rg3
- 2.Rd6#
- 1...Rh3
- 2.Rd6#
- 1...Rc4
- 2.Qd6#
- 1...Rc5
- 2.Qe4#
- 1...Bd4
- 2.Qxd4#
- threat
- 1.Se2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(b);::R1(F)
- R(b);P_PINR(F),S_CUTB(a)::QAR1(C)
- R(b);XS(B)::R1(F)
- R(b);SBLOCK::QAB1(C)
- R(b);SBLOCK,XP(E)::R1(F)
- B(a);SBLOCK::QAB1(C)
- Tries
- Try
- S(B);
- Threat
- S(B),XR(b)
- Vars
- R(b);SBLOCK,XP(E)::R1(F)
- R(b);::R1(F)
- R(b);SBLOCK::QAR1(C)
- Refutation
- B(a);
- Try
- B(A);XR(b)
- Threat
- R1(F)
- Vars
- B(a);N_GUARD::QAR1(C),XB(a)
- Refutation
- S(g);
- Try
- Actual
- S(B);
- Threat
- S(B),XR(b)
- Vars
- R(b);SBLOCK,XP(E)::R1(F)
- R(b);::R1(F)
- R(b);P_PINR(F),S_CUTB(a)::QAR1(C)
- R(b);SBLOCK::QAR1(C)
- R(b);SBLOCK::QAB1(C)
- B(a);N_GUARD::QAR1(C),XB(a)
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).