MESON Chess Problem Database
Problem Display
PID: 7910 (rB2N2n/6p1/2p1p3/R1p1P3/p3k3/bn1R3Q/B3NK2/7b w - - 0 1)
Burger, Robert Eugene
The Problemist, 1994
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Bf3
- 2.Qxf3#
- 1...Sa1
- 2.Re3#
- 1...Sc1
- 2.Re3#
- 1...Sd2
- 2.Re3#
- 1...Sd4
- 2.Re3#
- 1...Sxa5
- 2.Re3#
- 1...c4
- 2.Re3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Bf3
- Tries
- 1.Sg3+?
- 1...Kf4
- 2.Qh4#
- 1...Kxd3!
- 1...Kf4
- 1.Sc7?
- threat
- 2.Re3#
- 1...Kxe5
- 2.Qxe6#
- 1...Bc1!
- threat
- 1.Sxg7?
- threat
- 2.Qe3#
- 1...Bf3
- 2.Qxf3#
- 1...Bc1!
- threat
- 1.Bb1?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd7#
- 2.Rd8#
- 2.Qg4#
- 1...Sd4
- 2.Rxd4#
- 1...Bc1
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd7#
- 2.Rd8#
- 1...Bf3
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd7#
- 2.Rd8#
- 2.Qxf3#
- 1...Sa1
- 2.Rd4#
- 2.Qg4#
- 1...Sc1
- 2.Rd4#
- 2.Qg4#
- 1...Sd2
- 2.Rxd2#
- 2.Rd4#
- 2.Qg4#
- 1...Sg6
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd7#
- 2.Rd8#
- 1...Rxb8!
- threat
- 1.Rxb3?
- threat
- 2.Re3#
- 2.Qd3#
- 1...Kd5
- 2.Re3#
- 2.Rb4#
- 2.Qd3#
- 1...Rxb8
- 2.Re3#
- 1...Bc1
- 2.Qd3#
- 1...Bf3
- 2.Re3#
- 2.Qxf3#
- 1...c4
- 2.Bb1#
- 2.Re3#
- 2.Qg4#
- 1...axb3!
- threat
- 1.Rc3?
- threat
- 2.Qd3#
- 1...Kd5
- 2.Qxh1#
- 2.Qd3#
- 1...Bf3
- 2.Qxf3#
- 1...Sc1
- 2.Re3#
- 2.Qg4#
- 1...c4
- 2.Bb1#
- 2.Re3#
- 2.Qg4#
- 1...Rxb8!
- threat
- 1.Rxc5?
- threat
- 2.Sd6#
- 2.Re3#
- 1...Sxc5
- 2.Re3#
- 2.Rd4#
- 1...Bf3
- 2.Re3#
- 2.Qxf3#
- 1...Bc1
- 2.Sd6#
- 1...Sf7
- 2.Re3#
- 1...Bxc5+!
- threat
- 1.Qg3?
- threat
- 2.Sd6#
- 1...Kf5
- 2.Sd6#
- 1...Bf3
- 2.Qxf3#
- 1...Sf7
- 2.Qg6#
- 1...c4!
- threat
- 1.Qh7+?
- 1...Sg6
- 2.Qxg6#
- 1...g6!
- 1...Sg6
- 1.Sg3+?
- Keys
- 1.Rd5!
- threat
- 2.Qd3#
- 1...Kxd5
- 2.Qd3#
- 1...cxd5
- 2.Bb1#
- 1...exd5
- 2.Bb1#
- 1...Bf3
- 2.Qxf3#
- 1...Sc1
- 2.Sd6#
- 2.Qg4#
- 1...Sd4
- 2.Sd6#
- 1...c4
- 2.Bb1#
- 2.Qg4#
- threat
- 1.Rd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- B(a);N_GUARD::QAB1(E),XB(a)
- S(c);::R1(D)
- S(c);XR(F)::R1(D)
- P(f);::R1(D)
- P(i);N_GUARD::S(I)
- Tries
- Try
- S(B);CHECK
- Vars
- K(e);P-FLIGHT::QAR2(E)
- Refutation
- K(e);S_FLIGHT,XR(D)
- Try
- S(I);
- Threat
- R1(D)
- Vars
- K(e);OGATEB,P-FLIGHT,P_SPINP(f),XP(G)::QAR1(E),XP(h)
- Refutation
- B(b);
- Try
- S(I);XP(i)
- Threat
- QAR1(E)
- Vars
- B(a);N_GUARD::QAB1(E),XB(a)
- Refutation
- B(b);
- Try
- B(A);
- Threat
- DUALS(6)
- Vars
- S(c);::B(A)+R(D),DCHECK,XS(c)
- Refutation
- R(j);XB(H)
- Try
- R(D);XS(c)
- Threat
- DUALS(2)
- Vars
- R(j);XB(H)::R1(D)
- B(b);::QAB1(E)
- Refutation
- P(d);XR(D)
- Try
- R(D);
- Threat
- QAB1(E)
- Vars
- B(a);N_GUARD::QAB1(E),XB(a)
- Refutation
- R(j);XB(H)
- Try
- R(F);XP(f)
- Threat
- DUALS(2)
- Vars
- B(b);::S(I)
- S(k);::R1(D)
- Refutation
- B(b);CHECK,XR(F)
- Try
- Q(E);
- Threat
- S(I)
- Vars
- K(e);S_FLIGHT::S(I)
- B(a);N_GUARD::QAB1(E),XB(a)
- S(k);N_GUARD::QAB(E)
- Refutation
- P(f);
- Try
- Q(E);CHECK
- Vars
- S(k);N_GUARD,P_SPINS(k)::QAB(E),XS(k)
- Refutation
- P(i);P_SPINP(i)
- Try
- Actual
- R(D);
- Threat
- QAB1(E)
- Vars
- K(e);P_SPINP(f),P_SPINS(c),S_FLIGHT,XR(D)::QAR2(E)
- P(g);SBLOCK,XR(D)::B(A)
- P(h);SBLOCK,XR(D)::B(A)
- B(a);N_GUARD::QAB1(E),XB(a)
- S(c);::S(I)
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).