MESON Chess Problem Database
Problem Display
PID: 233538 (n2bB1n1/3P4/Pp1k1p1p/1R1P1RpK/3P2P1/3p1P2/3P4/4Q3 w - - 0 1)
Viksna, Kristaps
Freie Presse, 1965
#2
12 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kc7
- 2.Qg3#
- 1...Bc7
- 2.Qe6#
- 1...Be7
- 2.Qg3#
- 1...Sc7
- 2.Rxb6#
- 1...Se7
- 2.Qg3#
- 1...Kc7
- Tries
- 1.Rb1?
- 1...Kc7
- 2.Qg3#
- 1...Bc7
- 2.Qe6#
- 1...Be7
- 2.Qg3#
- 1...Sc7
- 2.Rxb6#
- 1...Se7
- 2.Qg3#
- 1...b5!
- 1...Kc7
- 1.Rb2?
- 1...Kc7
- 2.Qg3#
- 1...Bc7
- 2.Qe6#
- 1...Be7
- 2.Qg3#
- 1...Sc7
- 2.Rxb6#
- 1...Se7
- 2.Qg3#
- 1...b5!
- 1...Kc7
- 1.Rb3?
- 1...Kc7
- 2.Qg3#
- 1...Bc7
- 2.Qe6#
- 1...Be7
- 2.Qg3#
- 1...Sc7
- 2.Rxb6#
- 1...Se7
- 2.Qg3#
- 1...b5!
- 1...Kc7
- 1.Rb4?
- 1...Kc7
- 2.Qg3#
- 1...Bc7
- 2.Qe6#
- 1...Be7
- 2.Qg3#
- 1...Sc7
- 2.Rxb6#
- 1...Se7
- 2.Qg3#
- 1...b5!
- 1...Kc7
- 1.Rc5?
- threat
- 2.Rc6#
- 2.Qe6#
- 1...Sc7
- 2.Rc6#
- 1...Se7
- 2.Rxf6#
- 2.Qg3#
- 2.Qe6#
- 1...bxc5!
- threat
- 1.Rxg5?
- 1...Kc7
- 2.Qg3#
- 1...fxg5
- 2.Qe5#
- 1...Bc7
- 2.Qe6#
- 1...Be7
- 2.Qg3#
- 1...Sc7
- 2.Rxb6#
- 1...Se7
- 2.Qg3#
- 1...f5
- 2.Qe5#
- 1...hxg5!
- 1...Kc7
- 1.Qe2?
- 1...Kc7
- 2.Qh2#
- 1...Bc7
- 2.Qe6#
- 1...Be7
- 2.Qh2#
- 1...Sc7
- 2.Rxb6#
- 1...Se7
- 2.Qh2#
- 1...dxe2!
- 1...Kc7
- 1.a7?
- 1...Bc7
- 2.Qe6#
- 1...Be7
- 2.Qg3#
- 1...Sc7
- 2.Rxb6#
- 1...Se7
- 2.Qg3#
- 1...Kc7!
- 1...Bc7
- 1.Rb1?
- Keys
- 1.Qc1!
- 1...Ke7
- 2.Qa3#
- 1...Bc7
- 2.Qa3#
- 1...Be7
- 2.Qc6#
- 1...Sc7
- 2.Qa3#
- 1...Se7
- 2.Rxf6#
- 1...Ke7
- 1.Qc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(d);S_FLIGHT::QAB(A)
- B(h);SBLOCK::QAR1(A)
- B(h);SBLOCK::QAB(A)
- S(g);N_GUARD,SBLOCK,S_CUTB(h)::R(F),XP(c)
- S(i);SBLOCK::QAB(A)
- Tries
- Try
- R(F);
- Vars
- K(d);S_FLIGHT::QAB(A)
- B(h);SBLOCK::QAR1(A)
- B(h);SBLOCK::QAB(A)
- S(g);N_GUARD,SBLOCK,S_CUTB(h)::R(F),XP(c)
- S(i);SBLOCK::QAB(A)
- Refutation
- P(c);
- Try
- R(F);
- Vars
- K(d);S_FLIGHT::QAB(A)
- B(h);SBLOCK::QAR1(A)
- B(h);SBLOCK::QAB(A)
- S(g);N_GUARD,SBLOCK,S_CUTB(h)::R(F),XP(c)
- S(i);SBLOCK::QAB(A)
- Refutation
- P(c);
- Try
- R(F);
- Vars
- K(d);S_FLIGHT::QAB(A)
- B(h);SBLOCK::QAR1(A)
- B(h);SBLOCK::QAB(A)
- S(g);N_GUARD,SBLOCK,S_CUTB(h)::R(F),XP(c)
- S(i);SBLOCK::QAB(A)
- Refutation
- P(c);
- Try
- R(F);
- Vars
- K(d);S_FLIGHT::QAB(A)
- B(h);SBLOCK::QAR1(A)
- B(h);SBLOCK::QAB(A)
- S(g);N_GUARD,SBLOCK,S_CUTB(h)::R(F),XP(c)
- S(i);SBLOCK::QAB(A)
- Refutation
- P(c);
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- S(g);::R1(F)
- Refutation
- P(c);XR(F)
- Try
- R(H);XP(b)
- Vars
- K(d);S_FLIGHT::QAB(A)
- P(e);N_GUARD,XR(H)::QAB1(A)
- B(h);SBLOCK::QAR1(A)
- B(h);SBLOCK::QAB(A)
- S(g);N_GUARD,SBLOCK,S_CUTB(h)::R(F),XP(c)
- S(i);SBLOCK::QAB(A)
- P(e);N_GUARD::QAB1(A)
- Refutation
- P(f);XR(H)
- Try
- Q(A);
- Vars
- K(d);S_FLIGHT::QAB(A)
- B(h);SBLOCK::QAR1(A)
- B(h);SBLOCK::QAB(A)
- S(g);N_GUARD,SBLOCK,S_CUTB(h)::R(F),XP(c)
- S(i);SBLOCK::QAB(A)
- Refutation
- P(a);XQ(A)
- Try
- P(J);
- Vars
- B(h);SBLOCK::QAR1(A)
- B(h);SBLOCK::QAB(A)
- S(g);N_GUARD,SBLOCK,S_CUTB(h)::R(F),XP(c)
- S(i);SBLOCK::QAB(A)
- Refutation
- K(d);S_FLIGHT
- Try
- Actual
- Q(A);
- Vars
- K(d);S_FLIGHT::QAB(A)
- B(h);SBLOCK::QAB(A)
- B(h);SBLOCK::QAR1(A)
- S(g);SBLOCK::QAB(A)
- S(i);N_GUARD,SBLOCK,S_CUTB(h)::R(H),XP(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).