MESON Chess Problem Database
Problem Display
PID: 189777 (RNk5/2qR4/1p6/1P2P3/4Q3/8/2P5/1K6 w - - 0 1)
Nemo, Ottmar (Weiss, Ottmar)
3rd HM., Budapesti Sakkor, 1912
#2
8 + 3
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Qb7#
- 1...Qd6
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qd8
- 2.Qb7#
- 1...Qxc2+
- 2.Qxc2#
- 1...Qc3
- 2.Qb7#
- 1...Qc4
- 2.Qb7#
- 2.Qxc4#
- 1...Qc5
- 2.Qb7#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qxd7
- 2.Sa6#
- 1...Qxe5
- Tries
- 1.Kc1?
- 1...Qxc2+
- 2.Qxc2#
- 1...Qxe5
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxd7
- 2.Sa6#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Qb7#
- 1...Qc3
- 2.Qb7#
- 1...Qc4
- 2.Qb7#
- 2.Qxc4#
- 1...Qc5
- 2.Qb7#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qa7!
- 1...Qxc2+
- 1.Ka2?
- 1...Qxc2+
- 2.Qxc2#
- 1...Qc4+
- 2.Qxc4#
- 1...Qxe5
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxd7
- 2.Sa6#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Qb7#
- 1...Qc3
- 2.Qb7#
- 1...Qc5
- 2.Qb7#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qa7+!
- 1...Qxc2+
- 1.Sa6+?
- 1...Qb8
- 2.Qc6#
- 2.Qb7#
- 1...Kxd7!
- 1...Qb8
- 1.Sc6+?
- 1...Kb7
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sa7#
- 2.Se7#
- 2.Sd8#
- 2.Rb8#
- 1...Kxd7
- 2.Qf5#
- 2.Qg4#
- 1...Qb8!
- 1...Kb7
- 1.Rxc7+?
- 1...Kd8
- 2.Sa6#
- 1...Kxc7!
- 1...Kd8
- 1.Qh1?
- 1...Qxe5
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxd7
- 2.Sa6#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Qb7#
- 1...Qc3
- 2.Qb7#
- 2.Qh8#
- 1...Qc4
- 2.Qb7#
- 1...Qc5
- 2.Qb7#
- 1...Qc6
- 2.Qxc6#
- 2.Qh8#
- 1...Qa7
- 2.Qh8#
- 1...Qb7
- 2.Qxb7#
- 2.Qh8#
- 1...Qxc2+!
- 1...Qxe5
- 1.Qf3?
- 1...Qxe5
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxd7
- 2.Sa6#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Qb7#
- 1...Qc3
- 2.Qb7#
- 2.Qxc3#
- 2.Qf8#
- 1...Qc4
- 2.Qb7#
- 2.Qf8#
- 1...Qc5
- 2.Qb7#
- 1...Qc6
- 2.Qxc6#
- 2.Qf8#
- 1...Qa7
- 2.Qf8#
- 1...Qb7
- 2.Qxb7#
- 2.Qf8#
- 1...Qxc2+!
- 1...Qxe5
- 1.Qd5?
- 1...Qxe5
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxd7
- 2.Sa6#
- 2.Qxd7#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Sa6#
- 2.Sc6#
- 2.Qb7#
- 1...Qc3
- 2.Sa6#
- 2.Sc6#
- 2.Qb7#
- 2.Qg8#
- 1...Qc4
- 2.Sa6#
- 2.Sc6#
- 2.Qxc4#
- 2.Qb7#
- 1...Qc5
- 2.Sa6#
- 2.Sc6#
- 2.Qb7#
- 1...Qc6
- 2.Sxc6#
- 2.Qxc6#
- 2.Qg8#
- 1...Qa7
- 2.Qg8#
- 1...Qb7
- 2.Qxb7#
- 2.Qg8#
- 1...Qxc2+!
- 1...Qxe5
- 1.c3?
- 1...Qxe5
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxc3
- 2.Qb7#
- 1...Qxd7
- 2.Sa6#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Qb7#
- 1...Qc4
- 2.Qb7#
- 2.Qxc4#
- 1...Qc5
- 2.Qb7#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qa7!
- 1...Qxe5
- 1.c4?
- 1...Qxe5
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxc4
- 2.Qb7#
- 2.Qxc4#
- 1...Qxd7
- 2.Sa6#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Qb7#
- 1...Qc5
- 2.Qb7#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qa7!
- 1...Qxe5
- 1.e6?
- 1...Qxc2+
- 2.Qxc2#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 2.Qc4#
- 1...Qxd7
- 2.Sa6#
- 1...Qh2
- 2.Qb7#
- 1...Qg3
- 2.Qb7#
- 1...Qf4
- 2.Qb7#
- 1...Qe5
- 2.Qb7#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Sa6#
- 2.Sc6#
- 2.Qb7#
- 1...Qc3
- 2.Sa6#
- 2.Sc6#
- 2.Qb7#
- 1...Qc4
- 2.Sa6#
- 2.Sc6#
- 2.Qb7#
- 2.Qxc4#
- 1...Qc5
- 2.Sa6#
- 2.Sc6#
- 2.Qb7#
- 1...Qc6
- 2.Sxc6#
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qa7!
- 1...Qxc2+
- 1.Kc1?
- Keys
- 1.Qg2!
- 1...Qxc2+
- 2.Qxc2#
- 1...Qxe5
- 2.Qb7#
- 1...Qxb8
- 2.Qc6#
- 2.Qb7#
- 1...Qxd7
- 2.Sa6#
- 1...Qd6
- 2.Qb7#
- 1...Qd8
- 2.Qb7#
- 1...Qc3
- 2.Qb7#
- 2.Qg8#
- 1...Qc4
- 2.Qb7#
- 1...Qc5
- 2.Qb7#
- 1...Qc6
- 2.Qxc6#
- 2.Qg8#
- 1...Qa7
- 2.Qg8#
- 1...Qb7
- 2.Qxb7#
- 2.Qg8#
- 1...Qxc2+
- 1.Qg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(b);N_GUARD,XP(E)::QAB1(C)
- Q(b);N_GUARD::QAB1(C)
- Q(b);CHECK,OGATE,XP(B)::QAR(C),XQ(b)
- Q(b);OGATEB::QAR2(C),XQ(b)
- Q(b);N_GUARD::QAB1(C),XQ(b)
- Q(b);N_GUARD,SBLOCK,XR(F)::R(G)+S(H)
- Tries
- Try
- K(A);P-FLIGHT,P_SPINP(B)
- Vars
- Q(b);CHECK,OGATE,XP(B)::QAR(C),XQ(b)
- Q(b);N_GUARD,N_PINP(B),XP(E)::QAB1(C)
- Q(b);N_GUARD,N_PINP(B),SBLOCK,XR(F)::R(G)+S(H)
- Q(b);N_GUARD,N_PINP(B)::QAB1(C)
- Q(b);N_GUARD::QAB1(C)
- Q(b);OGATEB::QAR2(C),XQ(b)
- Q(b);N_GUARD,N_PINP(B)::QAB1(C),XQ(b)
- Refutation
- Q(b);N_PINP(B)
- Try
- K(A);S_FLIGHT
- Vars
- Q(b);CHECK,OGATE,XP(B)::QAR(C),XQ(b)
- Q(b);CHECK,OGATEB::QAR(C),XQ(b)
- Q(b);N_GUARD,XP(E)::QAB1(C)
- Q(b);N_GUARD,SBLOCK,XR(F)::R(G)+S(H)
- Q(b);N_GUARD::QAB1(C)
- Q(b);OGATEB::QAR2(C),XQ(b)
- Q(b);N_GUARD::QAB1(C),XQ(b)
- Refutation
- Q(b);CHECK
- Try
- S(H);CHECK
- Refutation
- K(c);S_FLIGHT,XR(F)
- Try
- S(H);CHECK
- Refutation
- Q(b);P_SPINQ(b)
- Try
- R(F);CHECK,XQ(b)
- Vars
- K(c);P-FLIGHT::R(G)+S(H)
- Refutation
- K(c);P-FLIGHT,XR(F)
- Try
- Q(C);
- Vars
- Q(b);N_GUARD,XP(E)::QAB1(C)
- Q(b);N_GUARD,SBLOCK,XR(F)::R(G)+S(H)
- Q(b);N_GUARD::QAB1(C)
- Q(b);N_GUARD::QAR(C)
- Refutation
- Q(b);CHECK,XP(B)
- Try
- Q(C);
- Vars
- Q(b);N_GUARD,XP(E)::QAB1(C)
- Q(b);N_GUARD,SBLOCK,XR(F)::R(G)+S(H)
- Q(b);N_GUARD::QAB1(C)
- Q(b);N_GUARD::QAR(C)
- Refutation
- Q(b);CHECK,XP(B)
- Try
- Q(C);
- Vars
- Q(b);N_GUARD,XP(E)::QAB1(C)
- Q(b);N_GUARD::QAB1(C)
- Q(b);N_GUARD::QAR(C)
- Refutation
- Q(b);CHECK,XP(B)
- Try
- P(B);
- Vars
- Q(b);N_GUARD,XP(E)::QAB1(C)
- Q(b);N_GUARD,XP(B)::QAB1(C)
- Q(b);N_GUARD,SBLOCK,XR(F)::R(G)+S(H)
- Q(b);N_GUARD::QAB1(C)
- Q(b);OGATEB::QAR2(C),XQ(b)
- Q(b);N_GUARD::QAB1(C),XQ(b)
- Refutation
- Q(b);
- Try
- P(B);
- Vars
- Q(b);N_GUARD,XP(E)::QAB1(C)
- Q(b);N_GUARD,SBLOCK,XR(F)::R(G)+S(H)
- Q(b);N_GUARD::QAB1(C)
- Q(b);OGATEB::QAR2(C),XQ(b)
- Q(b);N_GUARD::QAB1(C),XQ(b)
- Refutation
- Q(b);
- Try
- P(E);
- Vars
- Q(b);CHECK,OGATE,XP(B)::QAR(C),XQ(b)
- Q(b);N_GUARD,XR(F)::R(G)+S(H)
- Q(b);N_GUARD::QAB1(C)
- Q(b);N_GUARD::QAB1(C),XQ(b)
- Refutation
- Q(b);
- Try
- Actual
- Q(C);
- Vars
- Q(b);CHECK,OGATE,XP(B)::QAR(C),XQ(b)
- Q(b);N_GUARD,XP(E)::QAB1(C)
- Q(b);N_GUARD,SBLOCK,XR(F)::R(G)+S(H)
- Q(b);N_GUARD::QAB1(C)
- Q(b);N_GUARD::QAR(C)
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).