MESON Chess Problem Database
Problem Display
PID: 238732 (B7/3Q2p1/3P2P1/2PrP1BK/Pp1k4/1p1P4/1P2P3/5N2 w - - 0 1)
Ellerman, Arnoldo
L'Italia Scacchistica, 1958
#2
13 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kxc5
- 2.Qa7#
- 1...Rxd6
- 2.Qxd6#
- 1...Kxc5
- Tries
- 1.Sh2?
- 1...Kxc5
- 2.Qa7#
- 1...Kxe5
- 2.Sf3#
- 1...Rxc5
- 2.Sf3#
- 1...Rxd6
- 2.Qxd6#
- 1...Rxe5!
- 1...Kxc5
- 1.Qg4+?
- 1...Kxe5
- 2.Qe4#
- 1...Kxc5!
- 1...Kxe5
- 1.Qc6?
- threat
- 2.Qxd5#
- 1...Kxe5
- 2.Qxd5#
- 1...Rxc5
- 2.Qe4#
- 1...Rxd6
- 2.Qxd6#
- 1...Rxe5!
- threat
- 1.Qe6?
- threat
- 2.Be3#
- 2.Qxd5#
- 1...Rxc5
- 2.Be3#
- 1...Rxe5
- 2.Qc4#
- 1...Rxd6
- 2.Be3#
- 2.Qxd6#
- 1...Kxc5!
- threat
- 1.Qb7?
- threat
- 2.Qxd5#
- 1...Kxc5
- 2.Qa7#
- 1...Kxe5
- 2.Qxd5#
- 1...Rxc5
- 2.Qe4#
- 1...Rxe5
- 2.Qxb4#
- 1...Rxd6!
- threat
- 1.Qe7?
- threat
- 2.Be3#
- 1...Kxc5
- 2.Qa7#
- 1...Rxe5!
- threat
- 1.Qf7?
- threat
- 2.Qxd5#
- 1...Kxc5
- 2.Qa7#
- 1...Kxe5
- 2.Qxd5#
- 1...Rxc5
- 2.Qf4#
- 1...Rxe5
- 2.Qc4#
- 1...Rxd6!
- threat
- 1.Qxg7?
- threat
- 2.Be3#
- 1...Kxc5
- 2.Qa7#
- 1...Rxe5!
- threat
- 1.Sh2?
- Keys
- 1.Sd2!
- 1...Kxc5
- 2.Qa7#
- 1...Kxe5
- 2.Sf3#
- 1...Rxc5
- 2.Sf3#
- 1...Rxe5
- 2.Sxb3#
- 1...Rxd6
- 2.Qxd6#
- 1...Kxc5
- 1.Sd2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(c);OGATEB,S_FLIGHT,XP(F)::QAB(L)
- R(d);OGATE,P_SPINR(d),XP(J)::QAR2(L),XR(d)
- Tries
- Try
- S(A);
- Vars
- K(c);OGATEB,S_FLIGHT,XP(F)::QAB(L)
- K(c);S_FLIGHT,XP(G)::S(A)
- R(d);SBLOCK,XP(F)::S(A)
- R(d);OGATE,P_SPINR(d),XP(J)::QAR2(L),XR(d)
- Refutation
- R(d);P_PINB(H),XP(G)
- Try
- Q(L);CHECK
- Vars
- K(c);S_FLIGHT,XP(G)::QAR1(L)
- Refutation
- K(c);S_FLIGHT,XP(F)
- Try
- Q(L);
- Threat
- QAR1(L),XR(d)
- Vars
- K(c);S_FLIGHT,XP(G)::QAR1(L),XR(d)
- R(d);OGATE,SBLOCK,XP(F)::QAR1(L)
- R(d);OGATE,XP(J)::QAR2(L),XR(d)
- Refutation
- R(d);P_PINB(H),XP(G)
- Try
- Q(L);
- Threat
- DUALS(2)
- Vars
- R(d);SBLOCK,XP(F)::B(H)
- R(d);OGATE,P_PINB(H),SBLOCK,XP(G)::QAR1(L)
- Refutation
- K(c);S_FLIGHT,XP(F)
- Try
- Q(L);
- Threat
- QAR1(L),XR(d)
- Vars
- K(c);OGATEB,S_FLIGHT,XP(F)::QAB(L)
- K(c);S_FLIGHT,XP(G)::QAR1(L),XR(d)
- R(d);OGATE,SBLOCK,XP(F)::QAR1(L)
- R(d);P_PINB(H),SBLOCK,XP(G)::QAR2(L),XP(b)
- Refutation
- R(d);XP(J)
- Try
- Q(L);
- Threat
- B(H)
- Vars
- K(c);OGATEB,S_FLIGHT,XP(F)::QAB(L)
- Refutation
- R(d);P_PINB(H),XP(G)
- Try
- Q(L);
- Threat
- QAR1(L),XR(d)
- Vars
- K(c);OGATEB,S_FLIGHT,XP(F)::QAB(L)
- K(c);S_FLIGHT,XP(G)::QAR1(L),XR(d)
- R(d);SBLOCK,XP(F)::QAR2(L)
- R(d);OGATE,P_PINB(H),SBLOCK,XP(G)::QAR1(L)
- Refutation
- R(d);XP(J)
- Try
- Q(L);XP(e)
- Threat
- B(H)
- Vars
- K(c);OGATEB,S_FLIGHT,XP(F)::QAB(L)
- Refutation
- R(d);P_PINB(H),P_SPINR(d),XP(G)
- Try
- Actual
- S(A);
- Vars
- K(c);OGATEB,S_FLIGHT,XP(F)::QAB(L)
- K(c);S_FLIGHT,XP(G)::S(A)
- R(d);SBLOCK,XP(F)::S(A)
- R(d);P_PINB(H),SBLOCK,XP(G)::S(A),XP(a)
- R(d);OGATE,P_SPINR(d),XP(J)::QAR2(L),XR(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).