MESON Chess Problem Database
Problem Display
PID: 69311 (b4r2/KQN5/B2BP3/3n2q1/1P1kp1R1/p1p1n1R1/r2P4/4N3 w - - 0 1)
Lynn, David P
Pula Open Solving, 2000
#2
11 + 10
| 5926 | Chess Solving Yearbook 2000 | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Bc5#
- 1...Rf3
- 2.Sxf3#
- 1...Rb8
- 2.Sf3#
- 1...Rc8
- 2.Sf3#
- 1...Rd8
- 2.Sf3#
- 1...Re8
- 2.Sf3#
- 1...Rg8
- 2.Sf3#
- 1...Rh8
- 2.Sf3#
- 1...Sd1
- 2.Rd3#
- 1...Sf1
- 2.Rd3#
- 1...Sc2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sc4
- 2.Sb5#
- 2.Rd3#
- 1...Sf5
- 2.Sf3#
- 2.Rd3#
- 1...Sxb4
- 2.Rxe4#
- 1...Sf4
- 2.dxe3#
- 1...Sb6
- 2.Rxe4#
- 1...Sf6
- 2.Sf3#
- 1...Sxc7
- 2.Rxe4#
- 1...Se7
- 2.Rxe4#
- 1...Qe5
- Tries
- 1.Sc2+?
- 1...Sxc2
- 2.Rd3#
- 1...Rxc2!
- 1...Sxc2
- 1.Bd3?
- threat
- 2.Sb5#
- 2.Rxe4#
- 1...Qxg4
- 2.Sb5#
- 1...Sxg4
- 2.Sb5#
- 1...Sxb4
- 2.Rxe4#
- 1...Sxc7
- 2.Rxe4#
- 1...cxd2
- 2.Sb5#
- 1...Qf4
- 2.Sb5#
- 1...Qh4
- 2.Sb5#
- 1...Qe5
- 2.Sb5#
- 2.Bc5#
- 1...Qf5
- 2.Sb5#
- 1...Qg6
- 2.Sb5#
- 1...Rf4
- 2.Sb5#
- 1...Sf4
- 2.dxe3#
- 1...Sb6
- 2.Rxe4#
- 1...Se7
- 2.Rxe4#
- 1...Sf6!
- threat
- 1.Qxd5+?
- 1...Qxd5
- 2.dxe3#
- 1...Sxd5
- 2.Rd3#
- 1...Bxd5!
- 1...Qxd5
- 1.Qc6?
- threat
- 2.Sb5#
- 2.Qc5#
- 1...Sxb4
- 2.Rxe4#
- 2.Qxc3#
- 2.dxc3#
- 1...Sxc7
- 2.Rxe4#
- 2.dxc3#
- 1...Sf6
- 2.Sf3#
- 2.Qxc3#
- 2.dxc3#
- 1...Qe7
- 2.Qc5#
- 1...Qg7
- 2.Qc5#
- 1...Rf7
- 2.Qc5#
- 1...Rb8
- 2.Sf3#
- 2.Qc5#
- 1...Sf4
- 2.Qxc3#
- 2.dxc3#
- 2.dxe3#
- 1...Sb6
- 2.Rxe4#
- 2.Qxc3#
- 2.dxc3#
- 1...Se7
- 2.Rxe4#
- 2.Qxc3#
- 2.dxc3#
- 1...Bxc6!
- threat
- 1.Qb5?
- threat
- 2.Qd3#
- 2.Qc5#
- 1...Qxg4
- 2.Qc5#
- 1...Rxd2
- 2.Qc5#
- 1...Sxg4
- 2.Qc4#
- 2.Qc5#
- 1...Sxc7
- 2.Qd3#
- 1...Sf6
- 2.Sf3#
- 2.Qd3#
- 1...Qf4
- 2.Qc5#
- 1...Rf4
- 2.Qc5#
- 1...Sc4
- 2.Rd3#
- 2.Qxc4#
- 2.Qc5#
- 1...Sf4
- 2.dxe3#
- 1...Sb6
- 2.Qd3#
- 1...Se7
- 2.Qd3#
- 1...Sxb4!
- threat
- 1.dxe3+?
- 1...Sxe3
- 2.Rxe4#
- 1...Qxe3!
- 1...Sxe3
- 1.d3?
- threat
- 2.Sb5#
- 2.Rxe4#
- 1...Qxg4
- 2.Sb5#
- 1...Sxg4
- 2.Sb5#
- 1...Sxb4
- 2.Rxe4#
- 1...Sxc7
- 2.Rxe4#
- 1...c2
- 2.Sb5#
- 1...Sf6
- 2.Sf3#
- 1...Qf4
- 2.Sb5#
- 1...Qh4
- 2.Sb5#
- 1...Qe5
- 2.Sb5#
- 2.Bc5#
- 1...Qf5
- 2.Sb5#
- 1...Qg6
- 2.Sb5#
- 1...Rf4
- 2.Sb5#
- 1...Sb6
- 2.Rxe4#
- 1...Se7
- 2.Rxe4#
- 1...Sf4!
- threat
- 1.Sc2+?
- Keys
- 1.Be2!
- threat
- 2.Sb5#
- 1...Sxb4
- 2.Rxe4#
- 1...Sxc7
- 2.Rxe4#
- 1...Sf4
- 2.dxe3#
- 1...Sb6
- 2.Rxe4#
- 1...Sf6
- 2.Sf3#
- 1...Se7
- 2.Rxe4#
- threat
- 1.Be2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 12
- Sets
- Q(h);SBLOCK::B(G)
- R(j);N_GUARD::S(A),XR(j)
- R(j);N_GUARD::S(A)
- S(d);OGATE::R1(C)
- S(g);XP(D)::R1(E),XP(f)
- S(g);N_GUARD,N_SPINP(f),S_CUTQ(h)::P(B),XS(d)
- S(g);::R1(E),XP(f)
- S(g);S_CUTR(j)::S(A)
- S(g);XS(K)::R1(E),XP(f)
- Tries
- Try
- S(A);CHECK
- Vars
- S(d);OGATE,XS(A)::R1(C)
- Refutation
- R(a);XS(A)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(h);N_SPINP(f),XR(E)::S(K)
- S(d);N_SPINP(f),XR(E)::S(K)
- S(g);XP(D)::R1(E),XP(f)
- S(g);XS(K)::R1(E),XP(f)
- P(c);XP(B)::S(K)
- Q(h);N_SPINP(f)::S(K)
- Q(h);::S(K)
- R(j);N_SPINP(f)::S(K)
- S(g);N_GUARD,N_SPINP(f),S_CUTQ(h)::P(B),XS(d)
- S(g);::R1(E),XP(f)
- Refutation
- S(g);
- Try
- Q(J);CHECK,XS(g)
- Vars
- Q(h);XQ(J)::P(B),XS(d)
- S(d);OGATE,XQ(J)::R1(C)
- Refutation
- B(i);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- Q(h);P_PINS(K)::QAB1(J)
- R(j);P_PINS(K)::QAB1(J)
- Refutation
- B(i);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- Q(h);N_SPINP(f),XR(E)::QAB1(J)
- R(a);XP(B)::QAB1(J)
- S(g);XS(K)::QAR1(J)
- Q(h);N_SPINP(f)::QAB1(J)
- R(j);N_SPINP(f)::QAB1(J)
- S(g);N_GUARD,N_SPINP(f),S_CUTQ(h)::P(B),XS(d)
- S(g);::QAR1(J)
- Refutation
- S(g);XP(D)
- Try
- P(B);CHECK,XS(d)
- Vars
- S(g);XP(B)::R1(E),XP(f)
- Refutation
- Q(h);XP(B)
- Try
- P(B);
- Threat
- DUALS(2)
- Vars
- Q(h);N_SPINP(f),XR(E)::S(K)
- S(d);N_SPINP(f),XR(E)::S(K)
- S(g);XP(D)::R1(E),XP(f)
- S(g);XS(K)::R1(E),XP(f)
- P(c);::S(K)
- S(g);S_CUTR(j)::S(A)
- Q(h);N_SPINP(f)::S(K)
- Q(h);::S(K)
- R(j);N_SPINP(f)::S(K)
- S(g);::R1(E),XP(f)
- Refutation
- S(g);N_SPINP(f)
- Try
- Actual
- B(F);
- Threat
- S(K)
- Vars
- S(g);XP(D)::R1(E),XP(f)
- S(g);XS(K)::R1(E),XP(f)
- S(g);N_GUARD,N_SPINP(f),S_CUTQ(h)::P(B),XS(d)
- S(g);::R1(E),XP(f)
- S(g);S_CUTR(j)::S(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).