MESON Chess Problem Database
Problem Display
PID: 77006 (1nQ1N3/6p1/1p6/1Knk1PPp/2pBR2P/2p5/2P3R1/7B w - - 0 1)
Burger, Robert Eugene
The Problemist, 2007
#2
11 + 8
| 5454 | Near Snap | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Rg4#
- 1...Sb3
- 2.Qe6#
- 1...Sd3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Sxe4
- 2.Qxc4#
- 1...Sca6
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sd7
- 2.Qc6#
- 1...Kxe4
- Tries
- 1.Sf6+?
- 1...Kd6
- 2.Qxb8#
- 1...gxf6!
- 1...Kd6
- 1.Sc7+?
- 1...Kxe4
- 2.Rg4#
- 1...Kd6!
- 1...Kxe4
- 1.Bxc3?
- threat
- 2.Re5#
- 1...Sxe4
- 2.Rd2#
- 2.Qe6#
- 2.Qxc4#
- 1...Sd3
- 2.Qe6#
- 2.Qxc4#
- 1...Scd7
- 2.Rd2#
- 2.Qxc4#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...Kxe4!
- threat
- 1.Bxc5?
- threat
- 2.Qe6#
- 1...Sd7
- 2.Qb7#
- 2.Qc6#
- 2.Qa8#
- 1...Kxe4!
- threat
- 1.Bxg7?
- threat
- 2.Rd4#
- 1...Sxe4
- 2.Qe6#
- 2.Qxc4#
- 1...Sb3
- 2.Qe6#
- 2.Qxc4#
- 1...Se6
- 2.Qxe6#
- 2.Qxc4#
- 1...Sc6
- 2.Qxc6#
- 1...Kxe4!
- threat
- 1.Rg1?
- 1...Sxe4
- 2.Qxc4#
- 1...Sb3
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sd3
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sa4
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sca6
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Se6
- 2.Rf4#
- 2.Reg4#
- 2.Qxe6#
- 2.Qxc4#
- 1...Sb7
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Scd7
- 2.Rf4#
- 2.Reg4#
- 2.Qxc4#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...g6!
- 1...Sxe4
- 1.Rd2?
- threat
- 2.Re5#
- 1...Sxe4
- 2.Bxc3#
- 2.Qe6#
- 2.Qxc4#
- 1...Sd3
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...cxd2!
- threat
- 1.Rge2?
- 1...Sxe4
- 2.Qxc4#
- 1...Sb3
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sd3
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sa4
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sca6
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Se6
- 2.Rf4#
- 2.Rg4#
- 2.Qxe6#
- 2.Qxc4#
- 1...Sb7
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Scd7
- 2.Rf4#
- 2.Rg4#
- 2.Qxc4#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...g6!
- 1...Sxe4
- 1.Rf2?
- 1...Sxe4
- 2.Qxc4#
- 1...Sb3
- 2.Ref4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sd3
- 2.Ref4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sa4
- 2.Ref4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sca6
- 2.Ref4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Se6
- 2.Ref4#
- 2.Rg4#
- 2.Qxe6#
- 2.Qxc4#
- 1...Sb7
- 2.Ref4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Scd7
- 2.Ref4#
- 2.Rg4#
- 2.Qxc4#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...g6!
- 1...Sxe4
- 1.Rh2?
- 1...Sxe4
- 2.Qxc4#
- 1...Sb3
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sd3
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sa4
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sca6
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Se6
- 2.Rf4#
- 2.Rg4#
- 2.Qxe6#
- 2.Qxc4#
- 1...Sb7
- 2.Rf4#
- 2.Rg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Scd7
- 2.Rf4#
- 2.Rg4#
- 2.Qxc4#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...g6!
- 1...Sxe4
- 1.Rg3?
- 1...Sxe4
- 2.Qxc4#
- 1...Sb3
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sd3
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sa4
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sca6
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Se6
- 2.Rf4#
- 2.Reg4#
- 2.Qxe6#
- 2.Qxc4#
- 1...Sb7
- 2.Rf4#
- 2.Reg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Scd7
- 2.Rf4#
- 2.Reg4#
- 2.Qxc4#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...g6!
- 1...Sxe4
- 1.Rgg4?
- threat
- 2.Re5#
- 1...Sxe4
- 2.Qxc4#
- 1...hxg4!
- threat
- 1.Rf4?
- 1...Se4
- 2.Qxc4#
- 1...Sb3
- 2.Rg1#
- 2.Rd2#
- 2.Re2#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rgg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sd3
- 2.Rg1#
- 2.Rd2#
- 2.Re2#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rgg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sa4
- 2.Rg1#
- 2.Rd2#
- 2.Re2#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rgg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Sca6
- 2.Rg1#
- 2.Rd2#
- 2.Re2#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rgg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Se6
- 2.Rg1#
- 2.Rd2#
- 2.Re2#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rgg4#
- 2.Qxe6#
- 2.Qxc4#
- 1...Sb7
- 2.Rg1#
- 2.Rd2#
- 2.Re2#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rgg4#
- 2.Qe6#
- 2.Qxc4#
- 1...Scd7
- 2.Rg1#
- 2.Rd2#
- 2.Re2#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rgg4#
- 2.Qxc4#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...g6!
- 1...Se4
- 1.Qb7+?
- 1...Sc6
- 2.Qxc6#
- 1...Sxb7!
- 1...Sc6
- 1.Qxc5+?
- 1...Kxe4
- 2.Rf2#
- 2.Rg4#
- 1...bxc5!
- 1...Kxe4
- 1.Qxb8?
- threat
- 2.Qe5#
- 1...Sd3
- 2.Qb7#
- 2.Qa8#
- 1...Sd7
- 2.Qb7#
- 2.Qa8#
- 1...Kxe4!
- threat
- 1.g6?
- 1...Kxe4
- 2.Rg4#
- 1...Sxe4
- 2.Qxc4#
- 1...Sb3
- 2.Qe6#
- 1...Sd3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Sca6
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...Scd7!
- 1...Kxe4
- 1.Sf6+?
- Keys
- 1.Be5!
- 1...Kxe4
- 2.Re2#
- 1...Sxe4
- 2.Qe6#
- 1...g6
- 2.Sf6#
- 1...Sb3
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...Sca6
- 2.Qxc4#
- 1...Se6
- 2.Qxc4#
- 1...Sb7
- 2.Qxc4#
- 1...Scd7
- 2.Qxc4#
- 1...Sba6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sbd7
- 2.Qc6#
- 1...Kxe4
- 1.Be5!
Anticipated by 132196(1992)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(d);OGATEB,S_FLIGHT,XR(E)::B(A)+R(C),DCHECK
- S(c);N_GUARD::QAB1(J)
- S(c);OGATE,SBLOCK,XR(E)::QAB1(J),XP(b)
- S(c);N_GUARD::QAB1(J),XS(c)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
- Tries
- Try
- S(K);CHECK
- Vars
- K(d);P-FLIGHT::QAB(J),XS(h)
- Refutation
- P(g);XS(K)
- Try
- S(K);CHECK
- Vars
- K(d);S_FLIGHT,XR(E)::B(A)+R(C),DCHECK
- Refutation
- K(d);P-FLIGHT
- Try
- B(D);XP(a)
- Threat
- R1(E)
- Vars
- S(h);N_GUARD::QAB1(J),XS(h)
- S(h);N_GUARD::QAB1(J)
- Refutation
- K(d);S_FLIGHT,XR(E)
- Try
- B(D);XS(c)
- Threat
- QAB1(J)
- Refutation
- K(d);S_FLIGHT,XR(E)
- Try
- B(D);XP(g)
- Threat
- R1(E)
- Vars
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- K(d);S_FLIGHT,XR(E)
- Try
- R(C);
- Vars
- S(c);OGATE,P_SPINS(c),XR(E)::QAB1(J),XP(b)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- P(g);
- Try
- R(C);
- Threat
- B(A)+R(E),DCHECK
- Refutation
- P(a);XR(C)
- Try
- R(C);
- Vars
- S(c);OGATE,P_SPINS(c),XR(E)::QAB1(J),XP(b)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- P(g);
- Try
- R(C);
- Vars
- S(c);OGATE,P_SPINS(c),XR(E)::QAB1(J),XP(b)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- P(g);
- Try
- R(C);
- Vars
- S(c);OGATE,P_SPINS(c),XR(E)::QAB1(J),XP(b)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- P(g);
- Try
- R(C);
- Vars
- S(c);OGATE,P_SPINS(c),XR(E)::QAB1(J),XP(b)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- P(g);
- Try
- R(C);
- Threat
- B(A)+R(E),DCHECK
- Vars
- S(c);OGATE,P_SPINS(c),XR(E)::QAB1(J),XP(b)
- Refutation
- P(e);XR(C)
- Try
- R(E);
- Vars
- S(c);OGATE::QAB1(J),XP(b)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- P(g);
- Try
- Q(J);CHECK
- Vars
- S(h);N_GUARD,P_SPINS(h)::QAB1(J),XS(h)
- Refutation
- S(c);XQ(J)
- Try
- Q(J);CHECK,XS(c)
- Refutation
- P(f);XQ(J)
- Try
- Q(J);XS(h)
- Threat
- QAR1(J)
- Refutation
- K(d);S_FLIGHT,XR(E)
- Try
- P(I);
- Vars
- K(d);OGATEB,S_FLIGHT,XR(E)::B(A)+R(C),DCHECK
- S(c);OGATE,SBLOCK,XR(E)::QAB1(J),XP(b)
- S(c);N_GUARD::QAB1(J)
- S(c);N_GUARD::QAB1(J),XS(c)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- S(c);
- Try
- Actual
- B(D);
- Vars
- K(d);OGATEB,S_FLIGHT,XR(E)::B(A)+R(C),DCHECK
- S(c);N_GUARD,SBLOCK,XR(E)::QAB1(J)
- P(g);N_GUARD::S(K)
- S(c);OGATE::QAB1(J),XP(b)
- S(h);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAB1(J),XS(h)
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).