MESON Chess Problem Database
Problem Display
PID: 265294 (Q7/Rq2P1P1/1r1k4/3P1B1b/Np3NP1/pp3P2/3K3B/n2R4 w - - 0 1)
Castellari, Umberto
Il Problema, 1932
#2
13 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kc7
- 2.Qd8#
- 1...Kxe7
- 2.Qf8#
- 1...Qxd5+
- 2.Sxd5#
- 2.Qxd5#
- 1...Qa6
- 2.Se2#
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxh5#
- 2.Se6#
- 2.Sg6#
- 1...Qc8
- 2.Se2#
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxh5#
- 2.Se6#
- 2.Sg6#
- 1...Qxa7
- 2.Sg6#
- 1...Qc7
- 2.Sg6#
- 1...Qd7
- 2.Sg6#
- 1...Qxe7
- 2.Se6#
- 1...Qb8
- 2.Se2#
- 2.Sg2#
- 2.Sd3#
- 2.Sh3#
- 2.Sxh5#
- 2.Se6#
- 2.Sg6#
- 1...Kc7
- Tries
- 1.Ke1?
- threat
- 2.Sg6#
- 1...Qxe7+
- 2.Se6#
- 1...Ke5
- 2.Sxh5#
- 1...Kc7
- 2.Qd8#
- 1...Kxe7
- 2.Qf8#
- 1...Bg6
- 2.Sxg6#
- 1...Sc2+!
- threat
- 1.Ke3?
- threat
- 2.Sg6#
- 1...Qxe7+
- 2.Se6#
- 1...Ke5
- 2.Sxh5#
- 1...Kc7
- 2.Qd8#
- 1...Kxe7
- 2.Qf8#
- 1...Bg6
- 2.Sxg6#
- 1...Sc2+!
- threat
- 1.Se2+?
- 1...Kxe7
- 2.Qf8#
- 1...Kxd5!
- 1...Kxe7
- 1.Sg2+?
- 1...Kxe7
- 2.Qf8#
- 1...Kxd5!
- 1...Kxe7
- 1.Sd3+?
- 1...Kxe7
- 2.Qf8#
- 1...Kxd5!
- 1...Kxe7
- 1.Sh3+?
- 1...Kxe7
- 2.Qf8#
- 1...Kxd5!
- 1...Kxe7
- 1.Sxh5+?
- 1...Kxe7
- 2.Qf8#
- 1...Kxd5!
- 1...Kxe7
- 1.Be6?
- threat
- 2.Sg6#
- 1...Qxd5+
- 2.Qxd5#
- 1...Kc7
- 2.Qd8#
- 1...Kxe7
- 2.Qf8#
- 1...Bg6
- 2.Sxg6#
- 1...Ke5!
- threat
- 1.Qb8+?
- 1...Kxe7
- 2.Qf8#
- 1...Qc7
- 2.Qxc7#
- 1...Qxb8!
- 1...Kxe7
- 1.Ke1?
- Keys
- 1.Ke2!
- threat
- 2.Sg6#
- 1...Qa6+
- 2.Sd3#
- 1...Qxe7+
- 2.Se6#
- 1...Ke5
- 2.Sxh5#
- 1...Kc7
- 2.Qd8#
- 1...Kxe7
- 2.Qf8#
- 1...Bg6
- 2.Sxg6#
- threat
- 1.Ke2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT::QAB1(M)
- K(g);OGATEB,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- Q(h);XR(J)::B(C)+S(F)
- Q(h);::B(C)+S(F)
- Q(h);XP(K)::B(C)+S(F)
- Tries
- Try
- K(B);S_FLIGHT
- Threat
- B(C)+S(F)
- Vars
- Q(h);CHECK,XP(K)::B(C)+S(F)
- K(g);N_GUARD,S_FLIGHT::B(C)+S(F),XB(e)
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT::QAB1(M)
- K(g);OGATEB,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- B(e);::B(C)+S(F),XB(e)
- Refutation
- S(a);CHECK
- Try
- K(B);S_FLIGHT
- Threat
- B(C)+S(F)
- Vars
- Q(h);CHECK,XP(K)::B(C)+S(F)
- K(g);N_GUARD,S_FLIGHT::B(C)+S(F),XB(e)
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT::QAB1(M)
- K(g);OGATEB,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- B(e);::B(C)+S(F),XB(e)
- Refutation
- S(a);CHECK
- Try
- S(F);CHECK
- Vars
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- Refutation
- K(g);P-FLIGHT,P_SPINQ(h),XP(H)
- Try
- S(F);CHECK
- Vars
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- Refutation
- K(g);P-FLIGHT,P_SPINQ(h),XP(H)
- Try
- S(F);CHECK
- Vars
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- Refutation
- K(g);P-FLIGHT,P_SPINQ(h),XP(H)
- Try
- S(F);CHECK
- Vars
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- Refutation
- K(g);P-FLIGHT,P_SPINQ(h),XP(H)
- Try
- S(F);CHECK,XB(e)
- Vars
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- Refutation
- K(g);P-FLIGHT,P_SPINQ(h),XP(H)
- Try
- B(I);
- Threat
- B(C)+S(F)
- Vars
- Q(h);CHECK,OGATE,XP(H)::QAR1(M),XQ(h)
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT::QAB1(M)
- K(g);OGATEB,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- B(e);::B(C)+S(F),XB(e)
- Refutation
- K(g);S_FLIGHT
- Try
- Q(M);CHECK
- Vars
- K(g);OGATEB,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- Q(h);N_GUARD,P_SPINQ(h)::QAB1(M),XQ(h)
- Refutation
- Q(h);XQ(M)
- Try
- Actual
- K(B);P-FLIGHT
- Threat
- B(C)+S(F)
- Vars
- Q(h);CHECK::B(C)+S(F)
- Q(h);CHECK,XP(K)::B(C)+S(F)
- K(g);N_GUARD,S_FLIGHT::B(C)+S(F),XB(e)
- K(g);N_GUARD,P_SPINQ(h),S_FLIGHT::QAB1(M)
- K(g);OGATEB,P_SPINQ(h),S_FLIGHT,XP(K)::QAB1(M)
- B(e);::B(C)+S(F),XB(e)
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).