MESON Chess Problem Database
Problem Display
PID: 228934 (B2N1B2/4r3/Pp1r1pp1/2k2q1R/Pp5p/1P2P3/3R1N2/n4KQ1 w - - 0 1)
Ellerman, Arnoldo
Mari, Alberto
2nd Prize, L'Italia Scacchistica, 1926
#2
12 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Sd3#
- 1...Qe5
- 2.Se4#
- 1...Rc6
- 2.Sb7#
- 1...Rde6
- 2.Sxe6#
- 1...Rdd7
- 2.Se6#
- 1...Rxe3
- 2.Bxd6#
- 1...Re4
- 2.Bxd6#
- 1...Re5
- 2.Bxd6#
- 1...Ree6
- 2.Sxe6#
- 1...Ra7
- 2.Se6#
- 2.Bxd6#
- 1...Rb7
- 2.Bxd6#
- 1...Rc7
- 2.Se6#
- 2.Bxd6#
- 1...Red7
- 2.Se6#
- 1...Rf7
- 2.Se6#
- 2.Bxd6#
- 1...Rg7
- 2.Se6#
- 2.Bxd6#
- 1...Rh7
- 2.Se6#
- 2.Bxd6#
- 1...Re8
- 2.Bxd6#
- 1...Sc2
- 2.Rxc2#
- 1...Sxb3
- 2.Rc2#
- 1...Qd5
- Tries
- 1.Bxe7?
- threat
- 2.Se6#
- 2.Bxd6#
- 1...Sxb3
- 2.Rc2#
- 1...gxh5
- 2.Bxd6#
- 1...Qd5
- 2.Sd3#
- 2.Se4#
- 2.Se6#
- 2.Rdxd5#
- 2.Rhxd5#
- 1...g5
- 2.Bxd6#
- 1...b5!
- threat
- 1.Rd5+?
- 1...Qxd5
- 2.Sd3#
- 1...Rxd5!
- 1...Qxd5
- 1.Rxf5+?
- 1...Rd5
- 2.Se4#
- 2.Bxe7#
- 2.Rdxd5#
- 2.Rfxd5#
- 1...Re5
- 2.Sd3#
- 2.Se4#
- 2.Se6#
- 2.Bxd6#
- 1...gxf5!
- 1...Rd5
- 1.Qg3?
- threat
- 2.Qxd6#
- 1...Rxd2
- 2.Se6#
- 2.Qc7#
- 1...Rxd8
- 2.Qc7#
- 1...Sxb3
- 2.Rc2#
- 1...Qd5
- 2.Sd3#
- 1...Qe5
- 2.Se4#
- 1...Rd3
- 2.Se6#
- 2.Qc7#
- 1...Rd4
- 2.Se6#
- 2.Qc7#
- 2.exd4#
- 1...Rd5
- 2.Qc7#
- 1...Rc6
- 2.Sb7#
- 1...Rde6
- 2.Sxe6#
- 1...Rdd7
- 2.Se6#
- 1...Re5
- 2.Bxd6#
- 1...Ree6
- 2.Sxe6#
- 1...Red7
- 2.Se6#
- 1...hxg3!
- threat
- 1.Bxe7?
- Keys
- 1.Qh2!
- threat
- 2.Qxd6#
- 1...Rxd2
- 2.Se6#
- 2.Qc7#
- 1...Rxd8
- 2.Qc7#
- 1...Sxb3
- 2.Rc2#
- 1...Qd5
- 2.Sd3#
- 1...Qe5
- 2.Se4#
- 1...Rd3
- 2.Se6#
- 2.Qc7#
- 1...Rd4
- 2.Se6#
- 2.Qc7#
- 2.exd4#
- 1...Rd5
- 2.Qc7#
- 1...Rc6
- 2.Sb7#
- 1...Rde6
- 2.Sxe6#
- 1...Rdd7
- 2.Se6#
- 1...Re5
- 2.Bxd6#
- 1...Ree6
- 2.Sxe6#
- 1...Red7
- 2.Se6#
- threat
- 1.Qh2!
This is a version of 59989
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(e);N_PINS(D)::S(D)
- R(g);P_SPINR(j),SBLOCK::S(K)
- R(g);N_GUARD,P_SPINR(j)::S(K),XR(g)
- R(g);N_GUARD,P_SPINR(j)::S(K)
- R(j);OGATE,P_SPINR(g),XP(F)::B(L),XR(g)
- R(j);OGATE,P_SPINR(g)::B(L),XR(g)
- R(j);N_SPINQ(e),OGATE,P_SPINR(g)::B(L),XR(g)
- R(j);N_GUARD,P_SPINR(g)::S(K),XR(j)
- R(j);N_GUARD,P_SPINR(g)::S(K)
- S(a);N_GUARD::R(C),XS(a)
- S(a);N_GUARD,XP(E)::R(C)
- Tries
- Try
- B(L);P_PINR(g),XR(j)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,XP(E)::R(C)
- P(i);N_SPINQ(e),XR(H)::B(L),XR(g)
- P(i);N_SPINQ(e)::B(L),XR(g)
- Refutation
- P(f);
- Try
- R(C);CHECK,N_PINQ(e)
- Vars
- Q(e);N_PINS(D),P_SPINQ(e),XR(C)::S(D)
- Refutation
- R(g);P_SPINR(j),XR(C)
- Try
- R(H);CHECK,N_SPINS(D),XQ(e)
- Refutation
- P(i);XR(H)
- Try
- Q(B);
- Threat
- QAB1(B),XR(g)
- Vars
- R(g);OGATE,P_SPINR(j),XS(K)::QAR2(B)
- S(a);N_GUARD,XP(E)::R(C)
- Q(e);N_PINS(D)::S(D)
- R(g);N_SPINQ(e),OGATE,P_SPINR(j)::QAR2(B)
- R(g);P_SPINR(j),SBLOCK::S(K)
- R(g);N_GUARD,P_SPINR(j)::S(K),XR(g)
- R(g);N_GUARD,P_SPINR(j)::S(K)
- R(j);N_SPINQ(e),OGATE,P_SPINR(g)::B(L),XR(g)
- R(j);N_GUARD,P_SPINR(g)::S(K),XR(j)
- R(j);N_GUARD,P_SPINR(g)::S(K)
- Refutation
- P(c);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAB1(B),XR(g)
- Vars
- R(g);OGATE,P_SPINR(j),XS(K)::QAR2(B)
- S(a);N_GUARD,XP(E)::R(C)
- Q(e);N_PINS(D)::S(D)
- R(g);N_SPINQ(e),OGATE,P_SPINR(j)::QAR2(B)
- R(g);P_SPINR(j),SBLOCK::S(K)
- R(g);N_GUARD,P_SPINR(j)::S(K),XR(g)
- R(g);N_GUARD,P_SPINR(j)::S(K)
- R(j);N_SPINQ(e),OGATE,P_SPINR(g)::B(L),XR(g)
- R(j);N_GUARD,P_SPINR(g)::S(K),XR(j)
- R(j);N_GUARD,P_SPINR(g)::S(K)
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).