MESON Chess Problem Database
Problem Display
PID: 51028 (8/2N2p2/1n6/r1p2R2/1pBk1p2/1P3P2/5p2/2Q1bK2 w - - 0 1)
Bolus, Andrew
The Inquirer, 1913
#2
7 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sb5#
- 1...Ra2
- 2.Sb5#
- 1...Ra3
- 2.Sb5#
- 1...Ra4
- 2.Sb5#
- 1...Rb5
- 2.Sxb5#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...Bd2
- 2.Qxd2#
- 1...Bc3
- 2.Qxf4#
- 1...Sa4
- 2.Rd5#
- 1...Sxc4
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sd7
- 2.Rd5#
- 1...Sa8
- 2.Rd5#
- 1...Sc8
- 2.Rd5#
- 1...f6
- 2.Se6#
- 1...Ra1
- Tries
- 1.Be2?
- 1...Bd2
- 2.Qxd2#
- 1...Ra1
- 2.Sb5#
- 2.Qxc5#
- 1...Ra2
- 2.Sb5#
- 2.Qxc5#
- 1...Ra3
- 2.Sb5#
- 2.Qxc5#
- 1...Ra4
- 2.Sb5#
- 2.Qxc5#
- 1...Rb5
- 2.Sxb5#
- 1...Ra6
- 2.Sb5#
- 2.Qxc5#
- 1...Ra7
- 2.Sb5#
- 2.Qxc5#
- 1...Ra8
- 2.Sb5#
- 2.Qxc5#
- 1...Bc3
- 2.Qxf4#
- 1...Sa4
- 2.Rd5#
- 1...Sc4
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sd7
- 2.Rd5#
- 1...Sa8
- 2.Rd5#
- 1...Sc8
- 2.Rd5#
- 1...f6
- 2.Se6#
- 1...c4!
- 1...Bd2
- 1.Rg5?
- 1...Sxc4
- 2.Rd5#
- 1...Bd2
- 2.Qxd2#
- 1...Ra1
- 2.Sb5#
- 1...Ra2
- 2.Sb5#
- 1...Ra3
- 2.Sb5#
- 1...Ra4
- 2.Sb5#
- 1...Rb5
- 2.Sxb5#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...Bc3
- 2.Qxf4#
- 1...Sa4
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sd7
- 2.Rd5#
- 1...Sa8
- 2.Rd5#
- 1...Sc8
- 2.Rd5#
- 1...f6
- 2.Se6#
- 1...f5!
- 1...Sxc4
- 1.Rh5?
- 1...Sxc4
- 2.Rd5#
- 1...Bd2
- 2.Qxd2#
- 1...Ra1
- 2.Sb5#
- 1...Ra2
- 2.Sb5#
- 1...Ra3
- 2.Sb5#
- 1...Ra4
- 2.Sb5#
- 1...Rb5
- 2.Sxb5#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...Bc3
- 2.Qxf4#
- 1...Sa4
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sd7
- 2.Rd5#
- 1...Sa8
- 2.Rd5#
- 1...Sc8
- 2.Rd5#
- 1...f6
- 2.Se6#
- 1...f5!
- 1...Sxc4
- 1.Qb2+?
- 1...Bc3
- 2.Qxf2#
- 1...Ke3!
- 1...Bc3
- 1.Qd1+?
- 1...Ke3
- 2.Re5#
- 2.Qd3#
- 1...Bd2
- 2.Qxd2#
- 1...Kc3!
- 1...Ke3
- 1.Qc2?
- threat
- 2.Qd3#
- 1...Ke3
- 2.Qd3#
- 1...Sxc4!
- threat
- 1.Be2?
- Keys
- 1.Sd5!
- threat
- 2.Qxf4#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxd5
- 2.Rxd5#
- 1...Bd2
- 2.Qxd2#
- threat
- 1.Sd5!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 14
- Sets
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- B(a);N_GUARD::QAR2(A),XB(a)
- B(a);SBLOCK::QAR2(A),XP(e)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD,XB(E)::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(i);N_GUARD::S(G)
- Tries
- Try
- B(E);
- Vars
- B(a);N_GUARD::QAR2(A),XB(a)
- R(f);N_GUARD::S(G),XR(f)
- B(a);SBLOCK::QAR2(A),XP(e)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(i);N_GUARD::S(G)
- Refutation
- P(g);
- Try
- R(F);
- Vars
- S(h);N_GUARD,XB(E)::R1(F)
- B(a);N_GUARD::QAR2(A),XB(a)
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- B(a);SBLOCK::QAR2(A),XP(e)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(i);N_GUARD::S(G)
- Refutation
- P(i);
- Try
- R(F);
- Vars
- S(h);N_GUARD,XB(E)::R1(F)
- B(a);N_GUARD::QAR2(A),XB(a)
- R(f);N_GUARD::S(G)
- R(f);N_GUARD::S(G),XR(f)
- B(a);SBLOCK::QAR2(A),XP(e)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(i);N_GUARD::S(G)
- Refutation
- P(i);
- Try
- Q(A);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a),SBLOCK::QAB(A),XP(b)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR2(A),XB(a)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- K(d);S_FLIGHT::QAR1(A)
- Refutation
- S(h);XB(E)
- Try
- Actual
- S(G);
- Threat
- QAR2(A),XP(e)
- Vars
- S(h);OGATE,XB(E)::QAR1(A),XS(h)
- S(h);OGATE,XS(G)::R1(F),XS(h)
- B(a);N_GUARD::QAR2(A),XB(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).