MESON Chess Problem Database
Problem Display
PID: 148858 (1N2N3/KB1R2Pr/1p2p3/4k1p1/n1n1b1P1/4PP2/2Q5/1q6 w - - 0 1)
Beal, Edward W
2nd Prize, Probleemblad, 1973
#2
10 + 9
| 56 | The Problemist | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Qxe4#
- 1...Qa1
- 2.Qxe4#
- 1...Qc1
- 2.Qxe4#
- 1...Qd1
- 2.Qxe4#
- 1...Qe1
- 2.Qxe4#
- 1...Qf1
- 2.Qxe4#
- 1...Qg1
- 2.Qxe4#
- 1...Qh1
- 2.Qxe4#
- 1...Qb2
- 2.Qxe4#
- 1...Qb3
- 2.Qxe4#
- 1...Qb4
- 2.Qxe4#
- 1...Qb5
- 2.Qxe4#
- 1...Rh2
- 2.Qxh2#
- 1...Rxg7
- 2.Qh2#
- 1...Rh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...Bxc2
- 2.Sc6#
- 1...Bd3
- 2.Sc6#
- 1...Bf5
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 1...Sab2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sc5
- 2.Qc3#
- 1...Scb2
- 2.Qc7#
- 1...Sd2
- 2.Qc7#
- 1...Sa3
- 2.Qc7#
- 1...Sxe3
- 2.Qc7#
- 1...Sa5
- 2.Qc7#
- 1...Qa2
- Tries
- 1.Bxe4?
- threat
- 2.Sc6#
- 1...Sxe3
- 2.Qc7#
- 1...Sa5
- 2.Qc7#
- 1...Qb5!
- threat
- 1.Rd2?
- threat
- 2.Sd7#
- 1...Sxe3
- 2.Qc7#
- 1...Qb5
- 2.Qxe4#
- 1...Bc6
- 2.Sxc6#
- 1...Sc5
- 2.Qc3#
- 1...Rxg7!
- threat
- 1.Rd3?
- threat
- 2.Sd7#
- 1...Rxg7
- 2.Qh2#
- 1...Sxe3
- 2.Qc7#
- 1...Bc6
- 2.Sxc6#
- 1...Sc5
- 2.Qc3#
- 1...Qb5!
- threat
- 1.Rd4?
- threat
- 2.Sd7#
- 2.Rxe4#
- 1...Qxc2
- 2.Sd7#
- 1...Rxg7
- 2.Rxe4#
- 2.Qh2#
- 1...Bxc2
- 2.Sc6#
- 2.Sd7#
- 1...Bxf3
- 2.Sd7#
- 1...Bxb7
- 2.Sd7#
- 1...Sxe3
- 2.Rxe4#
- 1...Qb5
- 2.Rxe4#
- 2.Qxe4#
- 1...Bd3
- 2.Sc6#
- 2.Sd7#
- 1...Bd5
- 2.Sd7#
- 1...Bf5
- 2.Sc6#
- 2.Sd7#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 2.Sd7#
- 1...Sc3
- 2.Sd7#
- 1...Sd2
- 2.Sd7#
- 2.Qc7#
- 1...Sd6
- 2.Sd7#
- 1...Sc5!
- threat
- 1.Rd5+?
- 1...Bxd5
- 2.Sd7#
- 1...exd5!
- 1...Bxd5
- 1.Rd6?
- threat
- 2.Sd7#
- 1...Rxg7
- 2.Qh2#
- 1...Qb5
- 2.Qxe4#
- 1...Bc6
- 2.Sxc6#
- 1...Sc5
- 2.Qc3#
- 1...Sxe3!
- threat
- 1.Rd8?
- threat
- 2.Sd7#
- 1...Rxg7
- 2.Qh2#
- 1...Sxe3
- 2.Qc7#
- 1...Qb5
- 2.Qxe4#
- 1...Qd1
- 2.Qxe4#
- 1...Bc6
- 2.Sxc6#
- 1...Sc5
- 2.Qc3#
- 1...Bxb7!
- threat
- 1.Qd3?
- threat
- 2.Qd4#
- 1...Bxd3
- 2.Sc6#
- 1...Sxe3
- 2.Qd6#
- 1...Qa1
- 2.Qxe4#
- 1...Qd1
- 2.Qxe4#
- 1...Qb2
- 2.Qxe4#
- 1...Qxd3!
- threat
- 1.Bxe4?
- Keys
- 1.Rd1!
- threat
- 2.Sd7#
- 1...Qxd1
- 2.Qxe4#
- 1...Rxg7
- 2.Qh2#
- 1...Sxe3
- 2.Qc7#
- 1...Qb5
- 2.Qxe4#
- 1...Bc6
- 2.Sxc6#
- 1...Sc5
- 2.Qc3#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 21
- Sets
- Q(a);N_GUARD::QAR1(A),XB(d)
- R(i);N_GUARD::QAB(A),XR(i)
- R(i);N_GUARD,XP(H)::QAB(A)
- R(i);OGATE::PXR(i)=Q
- B(d);N_GUARD,XQ(A)::S(I)
- B(d);N_GUARD::S(I)
- B(d);N_GUARD::S(I),XB(d)
- S(b);N_GUARD::QAB(A)
- S(b);N_GUARD::QAB(A),XS(b)
- S(c);OGATE::QAB(A)
- S(c);OGATE,XP(B)::QAB(A)
- Tries
- Try
- B(F);XB(d)
- Threat
- S(I)
- Vars
- S(c);OGATE,XP(B)::QAB(A)
- S(c);OGATE::QAB(A)
- Refutation
- Q(a);
- Try
- R(G);
- Threat
- S(I)
- Vars
- S(c);OGATE,XP(B)::QAB(A)
- Q(a);N_GUARD::QAR1(A),XB(d)
- B(d);N_GUARD::S(I),XB(d)
- S(b);N_GUARD::QAB(A)
- Refutation
- R(i);P_PINB(F),XP(H)
- Try
- R(G);
- Threat
- S(I)
- Vars
- R(i);N_GUARD,P_PINB(F),XP(H)::QAB(A)
- S(c);OGATE,XP(B)::QAB(A)
- B(d);N_GUARD::S(I),XB(d)
- S(b);N_GUARD::QAB(A)
- Refutation
- Q(a);
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(A)::S(I)
- B(d);XP(C)::S(I)
- B(d);XB(F)::S(I)
- S(c);XP(B)::R1(G),XB(d)
- B(d);::S(I)
- B(d);N_GUARD::S(I),XB(d)
- S(b);::S(I)
- S(c);::S(I)
- Refutation
- S(b);
- Try
- R(G);CHECK
- Vars
- B(d);XR(G)::S(I)
- Refutation
- P(h);XR(G)
- Try
- R(G);
- Threat
- S(I)
- Vars
- R(i);N_GUARD,P_PINB(F),XP(H)::QAB(A)
- Q(a);N_GUARD::QAR1(A),XB(d)
- B(d);N_GUARD::S(I),XB(d)
- S(b);N_GUARD::QAB(A)
- Refutation
- S(c);XP(B)
- Try
- R(G);
- Threat
- S(I)
- Vars
- R(i);N_GUARD,P_PINB(F),XP(H)::QAB(A)
- S(c);OGATE,XP(B)::QAB(A)
- Q(a);N_GUARD::QAR1(A),XB(d)
- B(d);N_GUARD::S(I),XB(d)
- S(b);N_GUARD::QAB(A)
- Refutation
- B(d);XB(F)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- B(d);N_GUARD,XQ(A)::S(I)
- S(c);N_GUARD,XP(B)::QAB1(A)
- Q(a);N_GUARD::QAR1(A),XB(d)
- Refutation
- Q(a);XQ(A)
- Try
- Actual
- R(G);
- Threat
- S(I)
- Vars
- Q(a);N_GUARD,XR(G)::QAR1(A),XB(d)
- R(i);N_GUARD,P_PINB(F),XP(H)::QAB(A)
- S(c);OGATE,XP(B)::QAB(A)
- Q(a);N_GUARD::QAR1(A),XB(d)
- B(d);N_GUARD::S(I),XB(d)
- S(b);N_GUARD::QAB(A)
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).