MESON Chess Problem Database
Problem Display
PID: 203671 (2r3B1/3p1Nb1/2p3p1/1p1k1pQ1/1B5R/1K1N3p/3Rr3/8 w - - 0 1)
Cristoffanini, Guido
La Settimana Enigmistica, 1932
#2
8 + 10
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.Sf4#
- 2.Sc5#
- 2.Sd8#
- 1...Rxd2
- 2.Sd8#
- 1...Rf2
- 2.Sd8#
- 1...Rg2
- 2.Sd8#
- 1...Rh2
- 2.Sd8#
- 1...Re4
- 2.Sf4#
- 1...Re5
- 2.Sc5#
- 1...Re6
- 2.Sde5#
- 1...Rc7
- 2.Sfe5#
- 1...Be5
- 2.Sd8#
- 1...Bf8
- 2.Sfe5#
- 1...Ke6
- Tries
- 1.Sc5+?
- 1...Bd4
- 2.Rdxd4#
- 2.Rhxd4#
- 1...Rxd2!
- 1...Bd4
- 1.Sde5+?
- 1...Ke6
- 2.Rd6#
- 2.Qe7#
- 1...Rxd2!
- 1...Ke6
- 1.Qe7?
- threat
- 2.Sf4#
- 2.Qd6#
- 2.Qxd7#
- 1...Rxd2
- 2.Sd8#
- 2.Qd6#
- 2.Qxd7#
- 1...f4
- 2.Sxf4#
- 1...c5
- 2.Qd6#
- 2.Qxd7#
- 1...Re3
- 2.Qd6#
- 2.Qxd7#
- 1...Re5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sc5#
- 2.Sdxe5#
- 2.Qd6#
- 2.Qxd7#
- 1...Re6
- 2.Sde5#
- 2.Qc5#
- 1...Rc7
- 2.Sf4#
- 2.Sfe5#
- 2.Qd6#
- 1...Rd8
- 2.Sf4#
- 2.Qd6#
- 1...Be5
- 2.Sd8#
- 1...Bf8
- 2.Sf4#
- 2.Sfe5#
- 1...d6
- 2.Sf4#
- 2.Qxd6#
- 1...Rxe7!
- threat
- 1.Qg3?
- threat
- 2.Qd6#
- 1...Ke6
- 2.Qd6#
- 1...Re5
- 2.Sc5#
- 1...Re6
- 2.Sde5#
- 1...Be5
- 2.Sd8#
- 1...Bf8
- 2.Sfe5#
- 1...d6
- 2.Qxd6#
- 1...f4!
- threat
- 1.Qxf5+?
- 1...Re5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 2.Sdxe5#
- 2.Sd8#
- 2.Qxd7#
- 1...Be5
- 2.Sf4#
- 2.Sd8#
- 1...gxf5!
- 1...Re5
- 1.Qxg6?
- threat
- 2.Qd6#
- 1...f4
- 2.Sxf4#
- 1...Re6
- 2.Sde5#
- 1...Be5
- 2.Sd8#
- 1...Bf8
- 2.Sfe5#
- 1...d6
- 2.Qxd6#
- 1...Bf6!
- threat
- 1.Sc5+?
- Keys
- 1.Qf4!
- threat
- 2.Qd6#
- 1...Ke6
- 2.Qd6#
- 1...Re5
- 2.Sc5#
- 1...Re6
- 2.Sde5#
- 1...Be5
- 2.Sd8#
- 1...Bf8
- 2.Sfe5#
- 1...d6
- 2.Qxd6#
- threat
- 1.Qf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD,XR(A)::B(H)+S(G)
- R(a);N_GUARD::B(H)+S(G)
- R(a);SBLOCK::R(A)+S(C),DCHECK
- R(a);N_GUARD,N_SPINP(e),S_CUTB(i)::R(A)+S(C)
- R(a);N_GUARD,SBLOCK::R(A)+S(C)
- R(j);N_GUARD::B(H)+S(G)
- B(i);N_SPINP(e),S_CUTR(a)::B(H)+S(G)
- B(i);S_CUTR(j)::B(H)+S(G)
- Tries
- Try
- S(C);CHECK
- Refutation
- R(a);XR(A)
- Try
- S(C);CHECK,N_PINP(e)
- Refutation
- R(a);XR(A)
- Try
- Q(F);N_PINP(e)
- Threat
- DUALS(3)
- Vars
- P(e);::R(A)+S(C),DCHECK,XP(e)
- B(i);S_CUTR(a)::B(H)+S(G)
- Refutation
- R(a);XQ(F)
- Try
- Q(F);N_PINP(e)
- Threat
- QAR1(F)
- Vars
- K(d);S_FLIGHT::QAR1(F)
- R(a);N_GUARD,S_CUTB(i)::R(A)+S(C)
- R(a);N_GUARD,SBLOCK::R(A)+S(C)
- B(i);S_CUTR(a)::B(H)+S(G)
- B(i);S_CUTR(j)::B(H)+S(G)
- P(h);::QAR1(F),XP(h)
- Refutation
- P(e);
- Try
- Q(F);CHECK,XP(e)
- Refutation
- P(g);XQ(F)
- Try
- Q(F);N_PINP(e),XP(g)
- Threat
- QAR1(F)
- Vars
- P(e);::R(A)+S(C),DCHECK,XP(e)
- R(a);N_GUARD::R(A)+S(C)
- B(i);S_CUTR(a)::B(H)+S(G)
- B(i);S_CUTR(j)::B(H)+S(G)
- P(h);::QAR1(F),XP(h)
- Refutation
- B(i);
- Try
- Actual
- Q(F);N_PINP(e)
- Threat
- QAR1(F)
- Vars
- K(d);S_FLIGHT::QAR1(F)
- R(a);N_GUARD,S_CUTB(i)::R(A)+S(C)
- R(a);N_GUARD,SBLOCK::R(A)+S(C)
- B(i);S_CUTR(a)::B(H)+S(G)
- B(i);S_CUTR(j)::B(H)+S(G)
- P(h);::QAR1(F),XP(h)
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).