MESON Chess Problem Database
Problem Display
PID: 213827 (K4B2/N1R5/3nB1b1/2r5/1k2nN2/R3Q3/1r6/8 w - - 0 1)
Dohrn-Luttgens, Julius
Funkschach, 1926
#2
8 + 6
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Qb3#
- 1...Rbc2
- 2.Qb3#
- 1...Rd2
- 2.Qb3#
- 1...Re2
- 2.Qb3#
- 1...Rf2
- 2.Qb3#
- 1...Rg2
- 2.Qb3#
- 1...Rh2
- 2.Qb3#
- 1...Rb3
- 2.Qxb3#
- 1...Rc1
- 2.Sd5#
- 2.Rb7#
- 1...Rcc2
- 2.Sd5#
- 2.Rb7#
- 1...Rc4
- 2.Sd5#
- 2.Rxc4#
- 2.Rb7#
- 1...Ra5
- 2.Rc4#
- 1...Rb5
- 2.Sc6#
- 2.Rc4#
- 1...Rd5
- 2.Sxd5#
- 1...Re5
- 2.Rc4#
- 1...Rf5
- 2.Rc4#
- 1...Rg5
- 2.Rc4#
- 1...Rh5
- 2.Rc4#
- 1...Sd2
- 2.Qxc5#
- 1...Sf2
- 2.Qxc5#
- 1...Sc3
- 2.Qxc5#
- 1...Sg3
- 2.Qxc5#
- 1...Sg5
- 2.Qxc5#
- 1...Sf6
- 2.Qxc5#
- 1...Sc4
- 2.Sd5#
- 1...Sb5
- 2.Sc6#
- 1...Sf5
- 2.Rb7#
- 1...Sb7
- 2.Rxb7#
- 1...Sf7
- 2.Rb7#
- 1...Se8
- 2.Rb7#
- 1...Ra2
- Tries
- 1.Sd5+?
- 1...Kc4
- 2.Qd3#
- 1...Rxd5!
- 1...Kc4
- 1.Bxd6?
- threat
- 2.Rb7#
- 1...Sxd6
- 2.Qxc5#
- 1...Rb3
- 2.Qxb3#
- 1...Sc3
- 2.Bxc5#
- 2.Qxc5#
- 2.Qxc3#
- 1...Be8!
- threat
- 1.Ra1?
- threat
- 2.Qa3#
- 1...Rb3
- 2.Qxb3#
- 1...Rc3
- 2.Rb7#
- 2.Qb6#
- 1...Ra5
- 2.Sd3#
- 2.Rc4#
- 2.Qd4#
- 1...Sc3
- 2.Qxc5#
- 1...Sc4
- 2.Sd5#
- 1...Sb5
- 2.Sc6#
- 1...Ra2!
- threat
- 1.Ra2?
- threat
- 2.Qa3#
- 1...Rb3
- 2.Qxb3#
- 1...Rc3
- 2.Rb7#
- 2.Qb6#
- 1...Ra5
- 2.Sd3#
- 2.Rc4#
- 2.Qd4#
- 1...Sc3
- 2.Qxc5#
- 1...Sc4
- 2.Sd5#
- 1...Sb5
- 2.Sc6#
- 1...Rxa2!
- threat
- 1.Rxc5?
- threat
- 2.Sd5#
- 2.Sc6#
- 2.Rc4#
- 2.Rb5#
- 1...Sxc5
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Rc2
- 2.Sd5#
- 2.Sc6#
- 2.Rb5#
- 1...Rd2
- 2.Sc6#
- 2.Rc4#
- 2.Rb5#
- 1...Be8
- 2.Sd5#
- 2.Rc4#
- 1...Sd2
- 2.Sd5#
- 2.Sc6#
- 2.Rb5#
- 2.Qc3#
- 1...Sf6
- 2.Sc6#
- 2.Rc4#
- 2.Rb5#
- 2.Qc3#
- 1...Sc4
- 2.Sd5#
- 2.Sc6#
- 2.Rxc4#
- 2.Rb5#
- 1...Sb5
- 2.Sd5#
- 2.Sc6#
- 2.Rc4#
- 2.Rxb5#
- 1...Rb3!
- threat
- 1.Rb7+?
- 1...Rb5
- 2.Sc6#
- 2.Rxb5#
- 1...Sb5
- 2.Sc6#
- 2.Rxb5#
- 1...Sxb7!
- 1...Rb5
- 1.Sd5+?
- Keys
- 1.Ra6!
- threat
- 2.Qa3#
- 1...Ra5
- 2.Rc4#
- 1...Ra2
- 2.Qb3#
- 1...Rb3
- 2.Qxb3#
- 1...Rc3
- 2.Rb7#
- 2.Qb6#
- 1...Sc3
- 2.Qxc5#
- 1...Sc4
- 2.Sd5#
- 1...Sb5
- 2.Sc6#
- threat
- 1.Ra6!
This is a version of 108254
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 20
- Sets
- R(a);N_GUARD::QAR1(B)
- R(a);N_GUARD::QAR1(B),XR(a)
- R(d);OGATE,P_PINS(E),P_SPINS(e)::R1(F)
- R(d);N_GUARD,P_SPINS(e)::S(C),XR(d)
- R(d);OGATE,P_SPINS(e)::R1(F)
- S(c);N_GUARD::QAB1(B),XR(d)
- S(e);P_SPINR(d),SBLOCK::S(C)
- S(e);P_SPINR(d),SBLOCK::S(E)
- S(e);N_GUARD,P_SPINR(d)::R(F)
- S(e);N_GUARD,P_SPINR(d)::R(F),XS(e)
- Tries
- Try
- S(C);CHECK
- Vars
- K(b);P-FLIGHT,P_SPINR(d)::QAB1(B)
- Refutation
- R(d);P_SPINS(e),XS(C)
- Try
- B(H);P_PINR(d),XS(e)
- Threat
- R(F)
- Vars
- S(c);N_GUARD,N_SPINR(d),XB(H)::QAB1(B),XR(d)
- R(a);N_GUARD::QAR1(B),XR(a)
- Refutation
- B(f);
- Try
- R(A);
- Threat
- QAB1(B)
- Vars
- R(a);N_GUARD::QAR1(B),XR(a)
- S(c);N_GUARD::QAB1(B),XR(d)
- S(e);P_SPINR(d),SBLOCK::S(C)
- S(e);P_SPINR(d),SBLOCK::S(E)
- Refutation
- R(a);P_PINS(E)
- Try
- R(A);
- Threat
- QAB1(B)
- Vars
- R(a);N_GUARD::QAR1(B),XR(a)
- S(c);N_GUARD::QAB1(B),XR(d)
- S(e);P_SPINR(d),SBLOCK::S(C)
- S(e);P_SPINR(d),SBLOCK::S(E)
- Refutation
- R(a);P_PINS(E),XR(A)
- Try
- R(F);XR(d)
- Threat
- DUALS(4)
- Vars
- S(c);N_GUARD,XR(F)::QAB1(B)
- S(c);N_GUARD::QAB1(B),XS(c)
- Refutation
- R(a);
- Try
- R(F);CHECK
- Refutation
- S(e);P_SPINR(d),XR(F)
- Try
- Actual
- R(A);
- Threat
- QAB1(B)
- Vars
- R(d);OGATE,P_SPINS(e)::R1(F)
- R(a);N_GUARD::QAR1(B)
- R(a);N_GUARD::QAR1(B),XR(a)
- S(c);N_GUARD::QAB1(B),XR(d)
- S(e);P_SPINR(d),SBLOCK::S(C)
- S(e);P_SPINR(d),SBLOCK::S(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).