MESON Chess Problem Database
Problem Display
PID: 228928 (8/nKP1b3/2B1k3/1N1N1RPP/2QpbB2/5p2/8/1nrrq3 w - - 0 1)
Ellerman, Arnoldo
2nd Prize, L'Italia Scacchistica, 1926
#2
10 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kxf5
- 2.Bd7#
- 1...Bc2
- 2.Se3#
- 1...Bd3
- 2.Sxd4#
- 1...Bxd5
- 2.Qxd5#
- 1...Bxf5
- 2.Sdc3#
- 1...Ba3
- 2.Rf6#
- 1...Bb4
- 2.Rf6#
- 1...Bc5
- 2.Rf6#
- 1...Bd6
- 2.Rf6#
- 1...Bf6
- 2.Rxf6#
- 1...Bf8
- 2.Rf6#
- 1...Sd2
- 2.Sxd4#
- 1...Sxb5
- 2.c8Q#
- 2.c8B#
- 1...Sxc6
- 2.c8Q#
- 2.c8B#
- 1...d3
- 2.Sd4#
- 1...Kxf5
- Tries
- 1.Sxa7?
- threat
- 2.c8Q#
- 2.c8B#
- 1...Kxf5
- 2.Bd7#
- 2.c8Q#
- 2.c8B#
- 1...Rxc4
- 2.c8Q#
- 2.c8B#
- 1...Bxd5
- 2.Qxd5#
- 2.c8Q#
- 2.c8B#
- 1...Bxf5
- 2.Sc3#
- 1...Bxg5
- 2.c8Q#
- 2.c8B#
- 1...Bf6
- 2.Rxf6#
- 1...Qd2
- 2.c8Q#
- 2.c8B#
- 1...Qf2
- 2.c8Q#
- 2.c8B#
- 1...Qc3
- 2.c8Q#
- 2.c8B#
- 1...Qg3
- 2.c8Q#
- 2.c8B#
- 1...Qh4
- 2.c8Q#
- 2.c8B#
- 1...Qa5
- 2.c8Q#
- 2.c8B#
- 1...Qf1
- 2.c8Q#
- 2.c8B#
- 1...Qg1
- 2.c8Q#
- 2.c8B#
- 1...Qh1
- 2.c8Q#
- 2.c8B#
- 1...Qe2
- 2.c8Q#
- 2.c8B#
- 1...Qe3
- 2.c8Q#
- 2.c8B#
- 1...Rc2
- 2.c8Q#
- 2.c8B#
- 1...Rc3
- 2.c8Q#
- 2.c8B#
- 1...Rd2
- 2.c8Q#
- 2.c8B#
- 1...Rd3
- 2.c8Q#
- 2.c8B#
- 1...Bc2
- 2.Se3#
- 2.c8Q#
- 2.c8B#
- 1...Bd3
- 2.c8Q#
- 2.c8B#
- 1...Ba3
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Bb4
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Bc5
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Bd6
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Bd8
- 2.c8Q#
- 2.c8B#
- 1...Bf8
- 2.Rf6#
- 2.c8Q#
- 2.c8B#
- 1...Sd2
- 2.c8Q#
- 2.c8B#
- 1...Sa3
- 2.c8Q#
- 2.c8B#
- 1...Sc3
- 2.c8Q#
- 2.c8B#
- 1...f2
- 2.c8Q#
- 2.c8B#
- 1...d3
- 2.c8Q#
- 2.c8B#
- 1...Qb4+!
- threat
- 1.Sdc3+?
- 1...Bd5
- 2.Qxd5#
- 1...Kxf5!
- 1...Bd5
- 1.Se3+?
- 1...Bd5
- 2.Qxd5#
- 1...Rxc4!
- 1...Bd5
- 1.g6?
- threat
- 2.Re5#
- 1...Kxf5
- 2.Bd7#
- 1...Bxd5
- 2.Qxd5#
- 1...Sxb5
- 2.c8Q#
- 2.c8B#
- 1...Sxc6
- 2.c8Q#
- 2.c8B#
- 1...Bc2
- 2.Se3#
- 1...Bd3
- 2.Sxd4#
- 1...Bd6
- 2.Rf6#
- 1...Bf6
- 2.Rxf6#
- 1...Bxf5!
- threat
- 1.Sxa7?
- Keys
- 1.Be8!
- threat
- 2.Re5#
- 1...Bxd5+
- 2.Qxd5#
- 1...Kxf5
- 2.Bd7#
- 1...Bxf5
- 2.Sdc3#
- 1...Sxb5
- 2.c8Q#
- 2.c8B#
- 1...Bc2
- 2.Se3#
- 1...Bd3
- 2.Sxd4#
- 1...Bd6
- 2.Rf6#
- 1...Bf6
- 2.Rxf6#
- 1...Sc6
- 2.c8Q#
- 2.c8B#
- threat
- 1.Be8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- K(h);S_FLIGHT,XR(E)::B(H)
- B(g);N_GUARD,S_CUTR(b)::QAB(A)+S(D)
- B(g);S_CUTR(c)::S(C),XP(f)
- B(g);OGATE,P_PINB(H),P_SPINB(g),XS(D)::QAB1(A),XB(g)
- B(g);N_GUARD,SBLOCK,XR(E)::QAB(A)+S(D)
- B(j);N_GUARD::R1(E)
- B(j);N_GUARD::R1(E),XB(j)
- S(a);S_CUTR(c)::S(C),XP(f)
- S(i);N_GUARD,XS(C)::P=Q
- S(i);N_GUARD,XB(H)::P=Q
- P(f);S_CUTR(c)::S(C)
- Tries
- Try
- S(C);XS(i)
- Threat
- P=Q
- Vars
- R(b);XQ(A)::P=Q
- B(g);N_GUARD,SBLOCK,XR(E)::QAB(A)+S(D)
- B(j);XP(F)::P=Q
- B(j);N_GUARD::R1(E),XB(j)
- Q(d);::P=Q
- R(b);::P=Q
- R(c);::P=Q
- B(g);::P=Q
- B(j);::P=Q
- S(a);::P=Q
- P(e);::P=Q
- P(f);::P=Q
- Refutation
- Q(d);CHECK
- Try
- S(D);CHECK,P_SPINB(H)
- Vars
- B(g);N_GUARD,P_SPINB(g)::QAB1(A),XB(g)
- Refutation
- K(h);S_FLIGHT,XR(E)
- Try
- S(D);CHECK,P_SPINB(H)
- Vars
- B(g);N_GUARD,P_SPINB(g)::QAB1(A),XB(g)
- Refutation
- R(b);XQ(A)
- Try
- P(F);
- Threat
- R1(E)
- Vars
- K(h);S_FLIGHT,XR(E)::B(H)
- B(g);OGATE,P_PINB(H),P_SPINB(g),XS(D)::QAB1(A),XB(g)
- S(i);N_GUARD,XS(C)::P=Q
- S(i);N_GUARD,XB(H)::P=Q
- B(g);N_GUARD,S_CUTR(b)::QAB(A)+S(D)
- B(g);S_CUTR(c)::S(C),XP(f)
- B(j);N_GUARD::R1(E)
- B(j);N_GUARD::R1(E),XB(j)
- Refutation
- B(g);XR(E)
- Try
- Actual
- B(H);P_SPINS(D)
- Threat
- R1(E)
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XS(D)::QAB1(A),XB(g)
- K(h);S_FLIGHT,XR(E)::B(H)
- B(g);N_PINS(D),SBLOCK,XR(E)::QAB(A)+S(D)
- S(i);N_GUARD,XS(C)::P=Q
- B(g);N_PINS(D)::QAB(A)+S(D)
- B(g);N_PINS(D),S_CUTR(c)::S(C),XP(f)
- B(j);N_GUARD::R1(E)
- B(j);N_GUARD::R1(E),XB(j)
- S(i);N_GUARD,N_PINS(D)::P=Q
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).