MESON Chess Problem Database
Problem Display
PID: 265214 (4Q3/rk5K/p3p3/P2bB3/2p3R1/5p2/2B2P1p/6qR w - - 0 1)
Carra, Arturo
Norsk Sjakkblad, 1928
#2
8 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxf2
- 2.Rg7#
- 1...Qa1
- 2.Rg7#
- 1...Qb1
- 2.Rxb1#
- 2.Rg7#
- 1...Qc1
- 2.Rg7#
- 1...Qd1
- 2.Rg7#
- 1...Qe1
- 2.Rg7#
- 1...Qf1
- 2.Rg7#
- 1...Qxh1
- 2.Rg7#
- 1...Qg2
- 2.Rb1#
- 1...Qg3
- 2.Rb1#
- 1...Qxg4
- 2.Rb1#
- 1...Ra8
- 2.Qd7#
- 1...Be4+
- 2.Bxe4#
- 1...Bc6
- 2.Qb8#
- 1...c3
- 2.Rb4#
- 1...Qxf2
- Tries
- 1.Kh6?
- 1...Qxf2
- 2.Rg7#
- 1...Qxh1
- 2.Rg7#
- 1...Qxg4
- 2.Rb1#
- 1...Ra8
- 2.Qd7#
- 1...Qa1
- 2.Rg7#
- 1...Qb1
- 2.Rxb1#
- 2.Rg7#
- 1...Qd1
- 2.Rg7#
- 1...Qe1
- 2.Rg7#
- 1...Qf1
- 2.Rg7#
- 1...Qg2
- 2.Rb1#
- 1...Qg3
- 2.Rb1#
- 1...Be4
- 2.Bxe4#
- 1...Bc6
- 2.Qb8#
- 1...c3
- 2.Rb4#
- 1...Qc1+!
- 1...Qxf2
- 1.Kh8?
- 1...Qxf2
- 2.Rg7#
- 1...Qxh1
- 2.Rg7#
- 1...Qxg4
- 2.Rb1#
- 1...Qa1
- 2.Rg7#
- 1...Qb1
- 2.Rxb1#
- 2.Rg7#
- 1...Qc1
- 2.Rg7#
- 1...Qd1
- 2.Rg7#
- 1...Qe1
- 2.Rg7#
- 1...Qf1
- 2.Rg7#
- 1...Qg2
- 2.Rb1#
- 1...Qg3
- 2.Rb1#
- 1...Be4
- 2.Bxe4#
- 1...Bc6
- 2.Qb8#
- 1...c3
- 2.Rb4#
- 1...Ra8!
- 1...Qxf2
- 1.Ba4?
- threat
- 2.Qb8#
- 1...Qb1+
- 2.Rxb1#
- 1...Ra8
- 2.Qd7#
- 1...Be4+!
- threat
- 1.Bf5?
- 1...Qxf2
- 2.Rg7#
- 1...Qxh1
- 2.Rg7#
- 1...Qxg4
- 2.Rb1#
- 1...Ra8
- 2.Qd7#
- 1...Qa1
- 2.Rg7#
- 1...Qb1
- 2.Rxb1#
- 2.Rg7#
- 1...Qc1
- 2.Rg7#
- 1...Qd1
- 2.Rg7#
- 1...Qe1
- 2.Rg7#
- 1...Qf1
- 2.Rg7#
- 1...Qg2
- 2.Rb1#
- 1...Qg3
- 2.Rb1#
- 1...Be4
- 2.Bxe4#
- 1...Bc6
- 2.Qb8#
- 1...c3
- 2.Rb4#
- 1...exf5!
- 1...Qxf2
- 1.Rg3?
- 1...Be4+
- 2.Bxe4#
- 1...Qxf2
- 2.Rg7#
- 1...Qxh1
- 2.Rg7#
- 1...Qxg3
- 2.Rb1#
- 1...Ra8
- 2.Qd7#
- 1...Qa1
- 2.Rg7#
- 1...Qb1
- 2.Rxb1#
- 2.Rg7#
- 1...Qc1
- 2.Rg7#
- 1...Qd1
- 2.Rg7#
- 1...Qe1
- 2.Rg7#
- 1...Qf1
- 2.Rg7#
- 1...Qg2
- 2.Rb1#
- 1...Bc6
- 2.Qb8#
- 1...c3!
- 1...Be4+
- 1.Rg5?
- 1...Be4+
- 2.Bxe4#
- 1...Qxf2
- 2.Rg7#
- 1...Qxh1
- 2.Rg7#
- 1...Qxg5
- 2.Rb1#
- 1...Ra8
- 2.Qd7#
- 1...Qa1
- 2.Rg7#
- 1...Qb1
- 2.Rxb1#
- 2.Rg7#
- 1...Qc1
- 2.Rg7#
- 1...Qd1
- 2.Rg7#
- 1...Qe1
- 2.Rg7#
- 1...Qf1
- 2.Rg7#
- 1...Qg2
- 2.Rb1#
- 1...Qg3
- 2.Rb1#
- 1...Qg4
- 2.Rb1#
- 1...Bc6
- 2.Qb8#
- 1...c3!
- 1...Be4+
- 1.Kh6?
- Keys
- 1.Bd3!
- 1...Be4+
- 2.Bxe4#
- 1...Qxf2
- 2.Rg7#
- 1...Qxh1
- 2.Rg7#
- 1...Qxg4
- 2.Rb1#
- 1...cxd3
- 2.Rb4#
- 1...Ra8
- 2.Qd7#
- 1...Qa1
- 2.Rg7#
- 1...Qb1
- 2.Rxb1#
- 2.Rg7#
- 1...Qc1
- 2.Rg7#
- 1...Qd1
- 2.Rg7#
- 1...Qe1
- 2.Rg7#
- 1...Qf1
- 2.Rg7#
- 1...Qg2
- 2.Rb1#
- 1...Qg3
- 2.Rb1#
- 1...Bc6
- 2.Qb8#
- 1...c3
- 2.Rb4#
- 1...Be4+
- 1.Bd3!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(a);N_GUARD,XP(C)::R(D)
- Q(a);N_GUARD::R(D)
- Q(a);N_GUARD,XR(A)::R(D)
- Q(a);OGATE::R(A)
- Q(a);OGATE,XR(D)::R(A)
- R(h);SBLOCK::QAR2(H)
- B(e);CHECK,OGATEB::B(B),XB(e)
- B(e);SBLOCK::QAR1(H)
- P(d);OGATE::R(D)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- Q(a);N_GUARD,XP(C)::R(D)
- Q(a);N_GUARD,XR(A)::R(D)
- Q(a);OGATE,XR(D)::R(A)
- R(h);SBLOCK::QAR2(H)
- Q(a);N_GUARD::R(D)
- Q(a);OGATE::R(A)
- B(e);OGATEB::B(B),XB(e)
- B(e);SBLOCK::QAR1(H)
- P(d);OGATE::R(D)
- Refutation
- Q(a);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- Q(a);N_GUARD,XP(C)::R(D)
- Q(a);N_GUARD,XR(A)::R(D)
- Q(a);OGATE,XR(D)::R(A)
- Q(a);N_GUARD,P_PINB(F)::R(D)
- Q(a);N_GUARD::R(D)
- Q(a);OGATE::R(A)
- B(e);OGATEB::B(B),XB(e)
- B(e);SBLOCK::QAR1(H)
- P(d);OGATE::R(D)
- Refutation
- R(h);P_PINQ(H)
- Try
- B(B);
- Threat
- QAR1(H)
- Vars
- Q(a);CHECK,OGATE::R(A),XQ(a)
- R(h);SBLOCK::QAR2(H)
- Refutation
- B(e);CHECK
- Try
- B(B);
- Vars
- Q(a);N_GUARD,XP(C)::R(D)
- Q(a);N_GUARD,XR(A)::R(D)
- Q(a);OGATE,XR(D)::R(A)
- R(h);SBLOCK::QAR2(H)
- Q(a);N_GUARD::R(D)
- Q(a);OGATE::R(A)
- B(e);OGATEB,P_PINB(B)::B(B),XB(e)
- B(e);SBLOCK::QAR1(H)
- P(d);OGATE::R(D)
- Refutation
- P(g);XB(B)
- Try
- R(D);
- Vars
- B(e);CHECK,OGATEB::B(B),XB(e)
- Q(a);N_GUARD,XP(C)::R(D)
- Q(a);N_GUARD,XR(A)::R(D)
- Q(a);OGATE,XR(D)::R(A)
- R(h);SBLOCK::QAR2(H)
- Q(a);N_GUARD::R(D)
- Q(a);OGATE::R(A)
- B(e);SBLOCK::QAR1(H)
- Refutation
- P(d);
- Try
- R(D);
- Vars
- B(e);CHECK,OGATEB::B(B),XB(e)
- Q(a);N_GUARD,XP(C)::R(D)
- Q(a);N_GUARD,XR(A)::R(D)
- Q(a);OGATE,XR(D)::R(A)
- R(h);SBLOCK::QAR2(H)
- Q(a);N_GUARD::R(D)
- Q(a);OGATE::R(A)
- B(e);SBLOCK::QAR1(H)
- Refutation
- P(d);
- Try
- Actual
- B(B);
- Vars
- B(e);CHECK,OGATEB::B(B),XB(e)
- Q(a);N_GUARD,XP(C)::R(D)
- Q(a);N_GUARD,XR(A)::R(D)
- Q(a);OGATE,XR(D)::R(A)
- P(d);OGATE,XB(B)::R(D)
- R(h);SBLOCK::QAR2(H)
- Q(a);N_GUARD::R(D)
- Q(a);OGATE::R(A)
- B(e);SBLOCK::QAR1(H)
- P(d);OGATE::R(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).