MESON Chess Problem Database
Problem Display
PID: 262094 (5N2/5Pp1/8/3p2Pk/R4Qbq/6pN/6P1/2K4R w - - 0 1)
Somma, Francesco
Schweizerische Schachzeitung, 1929
#2
9 + 6
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxg5
- 2.Qxg5#
- 1...Qxh3
- 2.Qxg4#
- 1...Bd1
- 2.Qxh4#
- 1...Be2
- 2.Qxh4#
- 1...Bf3
- 2.Qxh4#
- 1...Bxh3
- 2.Qxh4#
- 1...Bf5
- 2.Qxh4#
- 1...Be6
- 2.Qxh4#
- 1...Bd7
- 2.Qxh4#
- 1...Bc8
- 2.Qxh4#
- 1...Qxg5
- Tries
- 1.Sg1?
- threat
- 2.Qxg4#
- 1...Bd1
- 2.Rxh4#
- 2.Qxh4#
- 1...Be2
- 2.Rxh4#
- 2.Qxh4#
- 1...Bf3
- 2.Rxh4#
- 2.Qxh4#
- 1...Bh3
- 2.Qxh4#
- 1...Bf5
- 2.Rxh4#
- 2.Qxh4#
- 1...Be6
- 2.Rxh4#
- 2.Qxh4#
- 1...Bd7
- 2.Rxh4#
- 2.Qxh4#
- 1...Bc8
- 2.Rxh4#
- 2.Qxh4#
- 1...d4!
- threat
- 1.Sf2?
- threat
- 2.Qxg4#
- 1...Bd1
- 2.Rxh4#
- 2.Qxh4#
- 1...Be2
- 2.Rxh4#
- 2.Qxh4#
- 1...Bf3
- 2.Rxh4#
- 2.Qxh4#
- 1...Bh3
- 2.Qxh4#
- 1...Bf5
- 2.Rxh4#
- 2.Qxh4#
- 1...Be6
- 2.Rxh4#
- 2.Qxh4#
- 1...Bd7
- 2.Rxh4#
- 2.Qxh4#
- 1...Bc8
- 2.Rxh4#
- 2.Qxh4#
- 1...Qxh1+!
- threat
- 1.Rd4?
- 1...Qxg5
- 2.Qxg5#
- 1...Qxh3
- 2.Qxg4#
- 1...Bxh3
- 2.Qxh4#
- 1...Bd1
- 2.Qxh4#
- 1...Be2
- 2.Qxh4#
- 1...Bf3
- 2.Qxh4#
- 1...Bf5
- 2.Qxh4#
- 1...Be6
- 2.Qxh4#
- 1...Bd7
- 2.Qxh4#
- 1...Bc8
- 2.Qxh4#
- 1...g6!
- 1...Qxg5
- 1.Qe4?
- threat
- 2.Qg6#
- 2.Qh7#
- 1...Qxg5+
- 2.Sf4#
- 1...Qxh3
- 2.Qxg4#
- 1...Bxh3
- 2.Qg6#
- 2.Qxh4#
- 1...Bf5
- 2.Qxh4#
- 1...g6
- 2.Qxg6#
- 1...dxe4!
- threat
- 1.Qf5?
- threat
- 2.Sf4#
- 2.Qg6#
- 2.Qh7#
- 1...Qxg5+
- 2.Sf4#
- 2.Qxg5#
- 1...Qxh3
- 2.Qxg4#
- 1...Bxh3
- 2.Qg6#
- 1...g6
- 2.Sf4#
- 2.Qxg6#
- 1...Bxf5!
- threat
- 1.Sg1?
- Keys
- 1.Qd4!
- 1...Qxg5+
- 2.Sf4#
- 1...Qxh3
- 2.Qxg4#
- 1...Bxh3
- 2.Qxh4#
- 1...Bd1
- 2.Qxh4#
- 1...Be2
- 2.Qxh4#
- 1...Bf3
- 2.Qxh4#
- 1...Bf5
- 2.Qxh4#
- 1...Be6
- 2.Qxh4#
- 1...Bd7
- 2.Qxh4#
- 1...Bc8
- 2.Qxh4#
- 1...g6
- 2.Qh8#
- 1...Qxg5+
- 1.Qd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(c);OGATE,P_PINQ(F),XP(G)::QAR1(F),XQ(c)
- Q(c);N_GUARD,P_SPINQ(c),XS(D)::QAB1(F),XB(b)
- B(b);OGATE::QAR1(F),XQ(c)
- B(b);OGATE,XS(D)::QAR1(F),XQ(c)
- Tries
- Try
- S(D);P_PINQ(c)
- Threat
- QAB1(F),XB(b)
- Vars
- B(b);N_SPINQ(c),OGATE::QAR1(F),XQ(c)
- Refutation
- P(d);
- Try
- S(D);P_PINQ(c)
- Threat
- QAB1(F),XB(b)
- Vars
- B(b);N_SPINQ(c),OGATE::QAR1(F),XQ(c)
- Refutation
- Q(c);CHECK,N_SPINQ(c),XR(B)
- Try
- R(E);
- Vars
- Q(c);OGATE,P_PINQ(F),XP(G)::QAR1(F),XQ(c)
- Q(c);N_GUARD,P_SPINQ(c),XS(D)::QAB1(F),XB(b)
- B(b);OGATE,XS(D)::QAR1(F),XQ(c)
- B(b);OGATE::QAR1(F),XQ(c)
- Refutation
- P(f);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,SBLOCK,XP(G)::R(B)+S(D),DCHECK
- Q(c);N_GUARD,P_SPINQ(c),XS(D)::QAB1(F),XB(b)
- B(b);OGATE::QAR1(F),XQ(c)
- P(f);::QAB1(F),XP(f)
- Refutation
- P(d);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- Q(c);N_GUARD,P_SPINQ(c),XS(D)::QAB1(F),XB(b)
- B(b);XS(D)::QAB1(F)
- Refutation
- B(b);XQ(F)
- Try
- Actual
- Q(F);
- Vars
- Q(c);CHECK,SBLOCK,XP(G)::R(B)+S(D),DCHECK
- Q(c);N_GUARD,P_SPINQ(c),XS(D)::QAB1(F),XB(b)
- B(b);OGATE,XS(D)::QAR1(F),XQ(c)
- B(b);OGATE::QAR1(F),XQ(c)
- P(f);OGATE::QAR(F)
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).