MESON Chess Problem Database
Problem Display
PID: 83512 (3K2N1/2p3P1/p2b2p1/r4kN1/1ppQ2R1/3r3q/5n2/1BB1n3 w - - 0 1)
Ellerman, Arnoldo
Queensland Chess Association, 1919
#2
8 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sh6#
- 1...Qg2
- 2.Sh6#
- 1...Qxg4
- 2.Sh6#
- 2.Qf6#
- 1...Qe3
- 2.Sh6#
- 1...Qf3
- 2.Sh6#
- 1...Qg3
- 2.Sh6#
- 1...Qh6
- 2.Sxh6#
- 1...Re5
- 2.Qf4#
- 1...Bh2
- 2.Se7#
- 1...Bg3
- 2.Se7#
- 1...Be5
- 2.Qd7#
- 1...Be7+
- 2.Sxe7#
- 1...Bf8
- 2.gxf8Q#
- 2.gxf8R#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sxg4
- 2.Qe4#
- 1...Qf1
- Tries
- 1.Rg1?
- threat
- 2.Qf6#
- 1...Be7+
- 2.Sxe7#
- 1...Qg2
- 2.Sh6#
- 1...Qg3
- 2.Sh6#
- 1...Re5
- 2.Qf4#
- 1...Bh2
- 2.Se7#
- 1...Bg3
- 2.Se7#
- 1...Bf4
- 2.Se7#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Qd7#
- 1...Bf8
- 2.gxf8Q#
- 2.gxf8R#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sg2!
- threat
- 1.Rg2?
- threat
- 2.Qf6#
- 1...Be7+
- 2.Sxe7#
- 1...Qxg2
- 2.Sh6#
- 1...Qg3
- 2.Sh6#
- 1...Re5
- 2.Qf4#
- 1...Bh2
- 2.Se7#
- 1...Bg3
- 2.Se7#
- 1...Bf4
- 2.Se7#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Qd7#
- 1...Bf8
- 2.gxf8Q#
- 2.gxf8R#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sxg2!
- threat
- 1.Rg1?
- Keys
- 1.Rg3!
- threat
- 2.Qf6#
- 1...Be7+
- 2.Sxe7#
- 1...Qxg3
- 2.Sh6#
- 1...Bxg3
- 2.Se7#
- 1...Re5
- 2.Qf4#
- 1...Bf4
- 2.Se7#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Qd7#
- 1...Bf8
- 2.gxf8Q#
- 2.gxf8R#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- threat
- 1.Rg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(d);N_GUARD::S(H)
- Q(d);N_GUARD::S(H),XQ(d)
- R(g);S_CUTB(j)::QAR1(C)
- B(j);N_GUARD,P_PINQ(C)::S(H)
- B(j);OGATE,P_PINQ(C),SBLOCK::QAB(C)
- B(j);CHECK,N_GUARD,P_PINQ(C)::S(H),XB(j)
- B(j);OGATE,P_PINQ(C)::PXB(j)=Q
- S(b);N_GUARD::QAB1(C)
- S(b);N_GUARD,N_SPINR(c)::QAB1(C),XS(b)
- S(b);N_GUARD,XR(D)::QAB1(C)
- Tries
- Try
- R(D);
- Threat
- QAR1(C)
- Vars
- B(j);CHECK,N_GUARD,P_PINQ(C)::S(H),XB(j)
- Q(d);N_GUARD::S(H)
- R(g);S_CUTB(j)::QAR1(C)
- B(j);N_GUARD,P_PINQ(C)::S(H)
- B(j);N_GUARD,P_PINQ(C),S_CUTR(g)::QAR2(C)
- B(j);OGATE,P_PINQ(C),SBLOCK::QAB(C)
- B(j);OGATE,P_PINQ(C)::PXB(j)=Q
- S(b);N_GUARD,N_SPINR(c)::QAB1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- Refutation
- S(a);
- Try
- R(D);
- Threat
- QAR1(C)
- Vars
- B(j);CHECK,N_GUARD,P_PINQ(C)::S(H),XB(j)
- Q(d);N_GUARD,XR(D)::S(H)
- Q(d);N_GUARD::S(H)
- R(g);S_CUTB(j)::QAR1(C)
- B(j);N_GUARD,P_PINQ(C)::S(H)
- B(j);N_GUARD,P_PINQ(C),S_CUTR(g)::QAR2(C)
- B(j);OGATE,P_PINQ(C),SBLOCK::QAB(C)
- B(j);OGATE,P_PINQ(C)::PXB(j)=Q
- S(b);N_GUARD,N_SPINR(c)::QAB1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- Refutation
- S(a);XR(D)
- Try
- Actual
- R(D);
- Threat
- QAR1(C)
- Vars
- B(j);CHECK,N_GUARD,P_PINQ(C)::S(H),XB(j)
- Q(d);N_GUARD,XR(D)::S(H)
- B(j);N_GUARD,P_PINQ(C),XR(D)::S(H)
- R(g);S_CUTB(j)::QAR1(C)
- B(j);N_GUARD,P_PINQ(C)::S(H)
- B(j);N_GUARD,P_PINQ(C),S_CUTR(g)::QAR2(C)
- B(j);OGATE,P_PINQ(C),SBLOCK::QAB(C)
- B(j);OGATE,P_PINQ(C)::PXB(j)=Q
- S(b);N_GUARD,N_SPINR(c)::QAB1(C),XS(b)
- S(b);N_GUARD::QAB1(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).