MESON Chess Problem Database
Problem Display
PID: 138696 (5NK1/4pR1p/1B6/4kbn1/3RN3/2p5/6Q1/r1q2B2 w - - 0 1)
Aloni, Yoel
StrateGems, 2010
#2
8 + 8
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Kf4
- 2.Qg3#
- 1...Qb2
- 2.Qg3#
- 1...Qa3
- 2.Qh2#
- 2.Qg3#
- 1...Qb1
- 2.Qh2#
- 2.Qg3#
- 1...Qd1
- 2.Qh2#
- 2.Qg3#
- 1...Qc2
- 2.Qg3#
- 1...Kf4
- Tries
- 1.Sd2?
- threat
- 2.Sc4#
- 2.Qd5#
- 2.Qh2#
- 2.Qg3#
- 1...Qxd2
- 2.Qd5#
- 1...Qxf1
- 2.Qd5#
- 1...Sxf7
- 2.Qg7#
- 1...cxd2
- 2.Qd5#
- 2.Qh2#
- 2.Qg3#
- 1...Qe1
- 2.Sc4#
- 2.Qd5#
- 1...Ra4
- 2.Qd5#
- 2.Qh2#
- 2.Qg3#
- 1...Ra5
- 2.Sc4#
- 2.Qh2#
- 2.Qg3#
- 1...Bd3
- 2.Rd5#
- 2.Qd5#
- 2.Qh2#
- 2.Qg3#
- 1...Be4
- 2.Sc4#
- 2.Qh2#
- 2.Qg3#
- 1...Be6
- 2.Qh2#
- 2.Qg3#
- 1...Sf3
- 2.Sxf3#
- 2.Sc4#
- 2.Qg3#
- 2.Qg7#
- 1...Sh3
- 2.Sf3#
- 2.Sc4#
- 2.Qd5#
- 2.Qg7#
- 1...Se6
- 2.Sf3#
- 2.Sc4#
- 2.Sd7#
- 2.Qd5#
- 1...e6
- 2.Sc4#
- 2.Sd7#
- 2.Qh2#
- 2.Qg3#
- 1...Se4!
- threat
- 1.Sf2?
- threat
- 2.Qd5#
- 1...Sxf7
- 2.Qg7#
- 1...Se4
- 2.Sd3#
- 1...Be4
- 2.Sg4#
- 1...Be6
- 2.Sd3#
- 1...Sf3
- 2.Qg7#
- 1...e6
- 2.Sd7#
- 1...Ra5!
- threat
- 1.Sxg5?
- threat
- 2.Sf3#
- 2.Qd5#
- 1...Qxf1
- 2.Qd5#
- 1...Ra5
- 2.Sf3#
- 1...Qe3
- 2.Qd5#
- 1...Qf4
- 2.Rd5#
- 2.Qd5#
- 1...Qd1
- 2.Qd5#
- 2.Qh2#
- 2.Qg3#
- 1...Be4
- 2.Sd7#
- 2.Qxe4#
- 1...Bg4
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Be6
- 2.Sf3#
- 2.Qe4#
- 1...e6
- 2.Sf3#
- 2.Sd7#
- 1...Qxg5+!
- threat
- 1.Sd6?
- threat
- 2.Sc4#
- 2.Rxf5#
- 2.Qd5#
- 1...Qxf1
- 2.Qd5#
- 1...Sxf7
- 2.Qg7#
- 1...exd6
- 2.Qd5#
- 1...Se4
- 2.Rxf5#
- 1...Ra5
- 2.Sc4#
- 2.Rxf5#
- 1...Qf4
- 2.Sc4#
- 2.Rd5#
- 2.Qd5#
- 1...Qb1
- 2.Sc4#
- 2.Qd5#
- 2.Qh2#
- 2.Qg3#
- 1...Qc2
- 2.Sc4#
- 2.Qd5#
- 2.Qg3#
- 1...Ra4
- 2.Rxf5#
- 2.Qd5#
- 1...Bb1
- 2.Sc4#
- 2.Rd5#
- 2.Qd5#
- 1...Bc2
- 2.Sc4#
- 2.Rd5#
- 2.Qd5#
- 1...Bd3
- 2.Rd5#
- 2.Qd5#
- 1...Bh3
- 2.Sc4#
- 2.Rd5#
- 2.Qd5#
- 1...Be4
- 2.Sc4#
- 1...Bg4
- 2.Sc4#
- 2.Rd5#
- 2.Qd5#
- 1...Bg6
- 2.Sc4#
- 2.Rd5#
- 2.Qd5#
- 1...Bd7
- 2.Sc4#
- 2.Rd5#
- 2.Qd5#
- 1...Bc8
- 2.Sc4#
- 2.Rd5#
- 2.Qd5#
- 1...Sf3
- 2.Sc4#
- 2.Rxf5#
- 2.Qg7#
- 1...e6
- 2.Sc4#
- 2.Sd7#
- 1...Be6!
- threat
- 1.Sd7+?
- 1...Kf4
- 2.Qg3#
- 1...Ke6
- 2.Sec5#
- 2.Bc4#
- 1...Bxd7!
- 1...Kf4
- 1.Rd5+?
- 1...Kf4
- 2.Rdxf5#
- 2.Rfxf5#
- 1...Kxd5!
- 1...Kf4
- 1.Qf2?
- threat
- 2.Bc7#
- 2.Rxf5#
- 2.Qxf5#
- 1...Qxf1
- 2.Bc7#
- 2.Rxf5#
- 1...Bxe4
- 2.Bc7#
- 1...Sxe4
- 2.Rxf5#
- 2.Qxf5#
- 1...Sf3
- 2.Bc7#
- 1...Qa3
- 2.Rxf5#
- 2.Qg3#
- 2.Qh2#
- 2.Qxf5#
- 1...Qe3
- 2.Rxf5#
- 2.Qxf5#
- 1...Qf4
- 2.Bc7#
- 1...Ra6
- 2.Rxf5#
- 2.Qxf5#
- 1...Ra7
- 2.Rxf5#
- 2.Qxf5#
- 1...Bh3
- 2.Bc7#
- 1...Bg4
- 2.Bc7#
- 1...Be6
- 2.Bc7#
- 1...Bg6
- 2.Bc7#
- 1...Bd7
- 2.Bc7#
- 1...Bc8
- 2.Bc7#
- 1...Se6
- 2.Sd7#
- 2.Rxf5#
- 2.Qxf5#
- 1...e6
- 2.Sd7#
- 2.Bc7#
- 1...Sxf7!
- threat
- 1.Qxg5?
- threat
- 2.Rxf5#
- 2.Rxe7#
- 2.Qxf5#
- 1...Qxf1
- 2.Rxe7#
- 1...Qa3
- 2.Rxf5#
- 2.Qg3#
- 2.Qxf5#
- 1...Qf4
- 2.Rxe7#
- 2.Qg7#
- 1...Ra7
- 2.Rxf5#
- 2.Qxf5#
- 1...e6
- 2.Sd7#
- 1...Qxg5+!
- threat
- 1.Sd2?
- Keys
- 1.Sc5!
- threat
- 2.Qd5#
- 1...Kxd4
- 2.Scd7#
- 1...Sxf7
- 2.Qg7#
- 1...Se4
- 2.Sd3#
- 1...Be4
- 2.Scd7#
- 1...Be6
- 2.Sd3#
- 1...Sf3
- 2.Qg7#
- 1...e6
- 2.Scd7#
- threat
- 1.Sc5!
This is a version of 135644
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 3
- Sets
- K(d);P_SPINB(e),S_FLIGHT::QAB1(B)
- Q(b);N_GUARD::QAB(B)
- Tries
- Try
- S(D);
- Threat
- DUALS(4)
- Vars
- Q(b);XS(D)::QAR1(B)
- Q(b);XB(A)::QAR1(B)
- S(f);OGATE,XR(F)::QAB(B)
- Refutation
- S(f);
- Try
- S(D);
- Threat
- QAR1(B)
- Vars
- S(f);OGATE,XR(F)::QAB(B)
- S(f);S_CUTB(e)::S(D)
- B(e);N_GUARD::S(D)
- B(e);N_GUARD,P_PINR(F)::S(D)
- S(f);OGATE::QAB(B)
- P(g);SBLOCK,S_CUTB(e)::S(G)
- Refutation
- R(a);
- Try
- S(D);XS(f)
- Threat
- DUALS(2)
- Vars
- Q(b);XB(A)::QAR1(B)
- R(a);::S(D)
- Q(b);::QAR1(B)
- Refutation
- Q(b);CHECK,XS(D)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- Q(b);XB(A)::QAR1(B)
- S(f);OGATE,XR(F)::QAB(B)
- P(g);XS(D)::QAR1(B)
- S(f);::R1(F),XB(e)
- B(e);::S(D)
- Refutation
- B(e);P_PINR(F)
- Try
- S(G);CHECK
- Vars
- K(d);P_SPINB(e),S_FLIGHT::QAB1(B)
- Refutation
- B(e);XS(G)
- Try
- R(C);CHECK
- Refutation
- K(d);P-FLIGHT,XR(C)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- B(e);XS(D)::B(E)
- S(f);::B(E)
- Q(b);::B(E)
- B(e);::B(E)
- B(e);P_PINR(F)::B(E)
- Refutation
- S(f);XR(F)
- Try
- Q(B);P_PINB(e),XS(f)
- Threat
- DUALS(3)
- Vars
- Q(b);XB(A)::R(F),XP(g)
- P(g);SBLOCK::S(G)
- Refutation
- Q(b);CHECK,N_SPINB(e),XQ(B)
- Try
- Actual
- S(D);
- Threat
- QAR1(B)
- Vars
- K(d);S_FLIGHT,XR(C)::B(E)+S(D)
- S(f);OGATE,XR(F)::QAB(B)
- S(f);S_CUTB(e)::S(D)
- B(e);N_GUARD::S(D)
- B(e);N_GUARD,P_PINR(F)::S(D)
- S(f);OGATE::QAB(B)
- P(g);S_CUTB(e)::S(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).