MESON Chess Problem Database
Problem Display
PID: 64800 (2r1NN2/4n1p1/6P1/R1nrk3/2Q2RP1/3P4/2K5/8 w - - 0 1)
Bottacchi, Antonio
1st Prize, Western Daily Mercury, 1919
(First published on Fri Nov 21 1919)
#2
9 + 6
| 133 | The Problemist Supplement | 2006 |
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxd3
- 2.Re4#
- 2.Qe4#
- 1...Rd4
- 2.Qxd4#
- 1...Rd6
- 2.Re4#
- 2.Qe4#
- 1...Rd7
- 2.Sxd7#
- 2.Re4#
- 2.Qe4#
- 1...Rdd8
- 2.Re4#
- 2.Qe4#
- 1...Sb3
- 2.Re4#
- 1...Sxd3
- 2.Re4#
- 1...Sa4
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sa6
- 2.Re4#
- 1...Se6
- 2.Sd7#
- 2.Re4#
- 1...Sb7
- 2.Re4#
- 1...Sd7
- 2.Re4#
- 1...Sf5
- 2.Rxf5#
- 1...Sc6
- 2.Rf5#
- 1...Sxg6
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Rxd3
- Tries
- 1.Sd7+?
- 1...Rxd7
- 2.Re4#
- 2.Qe4#
- 1...Sxd7
- 2.Re4#
- 1...Ke6!
- 1...Rxd7
- 1.Rf2?
- threat
- 2.Qf4#
- 1...Sxd3
- 2.Re2#
- 1...Sxg6
- 2.Rf5#
- 1...Rd4
- 2.Qe6#
- 1...Rd6
- 2.Re2#
- 2.Qe4#
- 1...Rd7
- 2.Sxd7#
- 2.Re2#
- 2.Qe4#
- 1...Rdd8
- 2.Re2#
- 2.Qe4#
- 1...Sb3
- 2.Re2#
- 1...Sa4
- 2.Re2#
- 1...Se4
- 2.d4#
- 1...Sa6
- 2.Re2#
- 1...Se6
- 2.Sd7#
- 2.Re2#
- 1...Sb7
- 2.Re2#
- 1...Sd7
- 2.Re2#
- 1...Rxd3!
- threat
- 1.Rf3?
- threat
- 2.Qf4#
- 1...Sxd3
- 2.Re3#
- 1...Sxg6
- 2.Rf5#
- 1...Rd4
- 2.Qe6#
- 1...Rd6
- 2.Re3#
- 2.Qe4#
- 1...Rd7
- 2.Sxd7#
- 2.Re3#
- 2.Qe4#
- 1...Rdd8
- 2.Re3#
- 2.Qe4#
- 1...Sb3
- 2.Re3#
- 1...Sa4
- 2.Re3#
- 1...Se4
- 2.d4#
- 1...Sa6
- 2.Re3#
- 1...Se6
- 2.Sd7#
- 2.Re3#
- 1...Sb7
- 2.Re3#
- 1...Sd7
- 2.Re3#
- 1...Rxd3!
- threat
- 1.Rf6?
- threat
- 2.Qf4#
- 1...Rxd3
- 2.Re6#
- 1...Sxd3
- 2.Sd7#
- 2.Re6#
- 1...Sxg6
- 2.Sxg6#
- 2.Rf5#
- 1...Rd4
- 2.Qe6#
- 1...Rd6
- 2.Qe4#
- 1...Rd7
- 2.Sxd7#
- 2.Re6#
- 2.Qe4#
- 1...Rdd8
- 2.Re6#
- 2.Qe4#
- 1...Sb3
- 2.Sd7#
- 2.Re6#
- 1...Sa4
- 2.Sd7#
- 2.Re6#
- 1...Se4
- 2.Sd7#
- 2.d4#
- 1...Sa6
- 2.Sd7#
- 2.Re6#
- 1...Se6
- 2.Sd7#
- 2.Rxe6#
- 1...Sb7
- 2.Sd7#
- 2.Re6#
- 1...Sd7
- 2.Sxd7#
- 2.Re6#
- 1...Sf5
- 2.Rxf5#
- 1...gxf6!
- threat
- 1.Rxc5?
- threat
- 2.Re4#
- 2.Qd4#
- 2.Qe4#
- 1...Rdxc5
- 2.Sd7#
- 2.Re4#
- 1...Rcxc5
- 2.Re4#
- 1...Sf5
- 2.Re4#
- 2.Rxf5#
- 2.Rxd5#
- 2.Qe4#
- 1...Sc6
- 2.Re4#
- 2.Rf5#
- 2.Rxd5#
- 2.Qe4#
- 1...Rxe8!
- threat
- 1.Qc3+?
- 1...Rd4
- 2.Qxd4#
- 1...Kxf4!
- 1...Rd4
- 1.d4+?
- 1...Rxd4
- 2.Qxd4#
- 1...Kxf4!
- 1...Rxd4
- 1.Sd7+?
- Keys
- 1.Rf7!
- threat
- 2.Qf4#
- 1...Rxd3
- 2.Rxe7#
- 1...Sxd3
- 2.Rxe7#
- 1...Sxg6
- 2.Rf5#
- 1...Rd4
- 2.Qe6#
- 1...Rd6
- 2.Qe4#
- 1...Rd7
- 2.Sxd7#
- 2.Qe4#
- 1...Rdd8
- 2.Rxe7#
- 2.Qe4#
- 1...Sb3
- 2.Rxe7#
- 1...Sa4
- 2.Rxe7#
- 1...Se4
- 2.d4#
- 1...Sa6
- 2.Rxe7#
- 1...Se6
- 2.Sd7#
- 1...Sb7
- 2.Rxe7#
- 1...Sd7
- 2.Rxe7#
- 1...Sf5
- 2.Rxf5#
- threat
- 1.Rf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 8
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(b);N_GUARD,P_SPINS(a)::QAB1(C),XR(b)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b)::R1(D)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b),XP(B)::R1(D)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b)::R1(D),XS(a)
- S(d);N_GUARD::R1(D),XS(d)
- S(d);N_GUARD::R1(D)
- S(d);N_GUARD,XP(G)::R1(D)
- Tries
- Try
- S(I);CHECK
- Vars
- S(a);P_PINQ(C),P_SPINR(b),XS(I)::R1(D)
- Refutation
- K(c);P-FLIGHT,P_SPINR(b)
- Try
- R(D);
- Threat
- QAB1(C)
- Vars
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b),XP(B)::R(D)
- S(d);N_GUARD,XP(G)::R1(D)
- R(b);OGATE,P_SPINS(a),SBLOCK::QAR1(C)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b)::R(D)
- S(a);P_PINQ(C),P_SPINR(b),SBLOCK::P(B)
- Refutation
- R(b);P_SPINS(a),XP(B)
- Try
- R(D);
- Threat
- QAB1(C)
- Vars
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b),XP(B)::R(D)
- S(d);N_GUARD,XP(G)::R1(D)
- R(b);OGATE,P_SPINS(a),SBLOCK::QAR1(C)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b)::R(D)
- S(a);P_PINQ(C),P_SPINR(b),SBLOCK::P(B)
- Refutation
- R(b);P_SPINS(a),XP(B)
- Try
- R(D);
- Threat
- QAB1(C)
- Vars
- R(b);P_SPINS(a),XP(B)::R1(D)
- R(b);OGATE,P_SPINS(a),SBLOCK::QAR1(C)
- R(b);P_SPINS(a)::QAR1(C)
- S(d);N_GUARD::R1(D),XS(d)
- Refutation
- P(e);XR(D)
- Try
- R(F);P_PINR(b),XS(a)
- Threat
- DUALS(3)
- Vars
- R(f);N_SPINR(b),P_PINQ(C),XR(F)::R1(D)
- Refutation
- R(f);XS(H)
- Try
- Q(C);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b),P_SPINS(a)::QAB1(C),XR(b)
- Refutation
- K(c);S_FLIGHT,XR(D)
- Try
- P(B);CHECK
- Vars
- R(b);OGATE,P_SPINS(a),XP(B)::QAB1(C),XR(b)
- Refutation
- K(c);S_FLIGHT,XR(D)
- Try
- Actual
- R(D);
- Threat
- QAB1(C)
- Vars
- R(b);P_SPINS(a),XP(B)::R(D),XS(d)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b),XP(B)::R(D),XS(d)
- S(d);N_GUARD,XP(G)::R1(D)
- R(b);OGATE,P_SPINS(a),SBLOCK::QAR1(C)
- R(b);P_SPINS(a)::QAR1(C)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b)::R(D),XS(d)
- S(a);P_PINQ(C),P_SPINR(b),SBLOCK::P(B)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b),SBLOCK::S(I)
- S(d);N_GUARD::R1(D),XS(d)
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).