MESON Chess Problem Database
Problem Display
PID: 57158 (4r3/2N1np2/1p5p/qp2R2K/r2k4/2R3Q1/1b6/3n1B2 w - - 0 1)
Ellerman, Arnoldo
3rd Comm., Brisbane Courier, 1917-1918
#2
6 + 11
SOLUTION
- SOUND
- Sets
- 1...Qxc3
- 2.Sxb5#
- 2.Qf4#
- 1...Qa7
- 2.Sxb5#
- 1...Qa8
- 2.Sxb5#
- 1...Rc4
- 2.Rd3#
- 1...Bxc3
- 2.Qf4#
- 1...Sf2
- 2.Qe3#
- 1...Sxc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...b4
- 2.Rc4#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Qxc3
- Tries
- 1.Bxb5?
- threat
- 2.Rd3#
- 1...Qxc3
- 2.Qf4#
- 1...Qxb5
- 2.Sxb5#
- 1...Bxc3
- 2.Qf4#
- 1...Sxc3
- 2.Qe3#
- 1...Ra3
- 2.Rc4#
- 1...Sf2
- 2.Qe3#
- 1...Sd5!
- threat
- 1.Rcc5?
- threat
- 2.Qf4#
- 2.Qh4#
- 2.Qd3#
- 2.Qg4#
- 1...Sd5
- 2.Rcxd5#
- 1...Qe1
- 2.Sxb5#
- 2.Qd3#
- 1...Qd2
- 2.Sxb5#
- 1...Qc3
- 2.Sxb5#
- 2.Qf4#
- 2.Qh4#
- 2.Qg4#
- 1...Qa8
- 2.Sxb5#
- 2.Qd3#
- 1...Ra3
- 2.Qf4#
- 2.Qh4#
- 2.Qg4#
- 1...Rc4
- 2.Qd3#
- 1...Rg8
- 2.Qf4#
- 2.Qd3#
- 1...Bc1
- 2.Qd3#
- 1...Sf2
- 2.Qxf2#
- 2.Qe3#
- 1...Sc3
- 2.Qf2#
- 2.Qg1#
- 2.Qd3#
- 2.Qe3#
- 1...Se3
- 2.Qf4#
- 2.Qxe3#
- 1...Sf5
- 2.Rcd5#
- 2.Qf4#
- 2.Qd3#
- 2.Qg4#
- 1...Sg6
- 2.Rcd5#
- 2.Qd3#
- 1...f5
- 2.Se6#
- 2.Qf4#
- 2.Qd3#
- 1...bxc5!
- threat
- 1.Re1?
- threat
- 2.Qe5#
- 2.Qd3#
- 1...Qxc3
- 2.Qe5#
- 1...Bxc3
- 2.Qe5#
- 1...Sxc3
- 2.Qf2#
- 2.Qe5#
- 2.Qg1#
- 2.Qe3#
- 1...Rc4
- 2.Qe5#
- 1...Se3
- 2.Qxe3#
- 1...Sf2
- 2.Qe5#
- 2.Qe3#
- 1...Sd5
- 2.Qd3#
- 1...Sf5
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...Sg6
- 2.Qd3#
- 1...Sc8
- 2.Qd3#
- 1...Sg8
- 2.Qd3#
- 1...f6
- 2.Qd3#
- 1...b4+!
- threat
- 1.Rd5+?
- 1...Ke4
- 2.Bg2#
- 2.Bd3#
- 2.Qh4#
- 2.Qe5#
- 2.Qf3#
- 2.Qg4#
- 1...Sxd5!
- 1...Ke4
- 1.Rf5?
- threat
- 2.Qe5#
- 2.Qd3#
- 1...Ke4
- 2.Qf4#
- 2.Qe5#
- 2.Qd3#
- 2.Qg4#
- 1...Qxc3
- 2.Qf4#
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 2.Qxe3#
- 1...Sd5
- 2.Qd3#
- 1...Sf2
- 2.Qe5#
- 2.Qe3#
- 1...Sc6
- 2.Qd3#
- 1...Sg6
- 2.Qd3#
- 1...Sc8
- 2.Qd3#
- 1...Sg8
- 2.Qd3#
- 1...b4
- 2.Rc4#
- 2.Qd3#
- 1...f6
- 2.Qd3#
- 1...Sxf5!
- threat
- 1.Bxb5?
- Keys
- 1.Qe1!
- threat
- 2.Re4#
- 1...Qxc3
- 2.Sxb5#
- 2.Qe4#
- 1...Bxc3
- 2.Qe4#
- 1...Sxc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sd5
- 2.Rxd5#
- 1...Qa8
- 2.Sxb5#
- 1...Rc4
- 2.Rd3#
- 1...Sf2
- 2.Qe3#
- 1...Sf5
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Sg6
- 2.Rd5#
- 1...Sc8
- 2.Rd5#
- 1...Sg8
- 2.Rd5#
- 1...b4
- 2.Rc4#
- 1...f5
- 2.Se6#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- Q(e);N_GUARD::S(F),XP(f)
- R(c);SBLOCK::R1(B)
- B(b);SBLOCK,XR(B)::QAR2(C)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD,XR(B)::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- P(f);N_GUARD,P_PINR(D),S_CUTR(c)::R1(B)
- P(j);N_GUARD::S(F)
- Tries
- Try
- B(A);XP(f)
- Threat
- R1(B)
- Vars
- Q(e);SBLOCK,XR(B)::QAR2(C)
- Q(e);P_PINR(D),XB(A)::S(F),XQ(e)
- B(b);SBLOCK,XR(B)::QAR2(C)
- S(a);N_GUARD,XR(B)::QAB1(C)
- R(c);N_GUARD::R1(B)
- S(a);N_GUARD::QAB1(C)
- Refutation
- S(i);
- Try
- R(B);
- Threat
- DUALS(4)
- Vars
- S(i);N_GUARD::R1(B),XS(i)
- Q(e);N_GUARD::S(F),XP(f)
- R(c);::QAR1(C)
- B(b);::QAR1(C)
- Refutation
- P(g);XR(B)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- Q(e);SBLOCK,XR(B)::QAB1(C)
- B(b);SBLOCK,XR(B)::QAB1(C)
- R(c);::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(i);::QAR1(C)
- P(j);::QAR1(C)
- Refutation
- P(f);CHECK
- Try
- R(D);CHECK
- Refutation
- S(i);XR(D)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- S(i);::QAR1(C)
- P(j);::QAR1(C)
- Refutation
- S(i);XR(D)
- Try
- Actual
- Q(C);
- Threat
- R1(D)
- Vars
- B(b);SBLOCK,XR(B)::QAR1(C)
- S(a);N_GUARD,XR(B)::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(i);N_GUARD::R1(D),XS(i)
- Q(e);N_GUARD::S(F),XP(f)
- R(c);SBLOCK::R1(B)
- S(a);N_GUARD::QAB1(C)
- S(i);N_GUARD::R1(D)
- P(f);N_GUARD,P_PINR(D),S_CUTR(c)::R1(B)
- P(j);N_GUARD::S(F)
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).