MESON Chess Problem Database
Problem Display
PID: 197834 (1KQ1n1N1/1P6/1p1kpbb1/5p2/1P2r3/2P2NR1/B6B/4R3 w - - 0 1)
Lebedkin, Elisey K
1st Prize, Suomen Shakki, 1986
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxb4
- 2.Rxe6#
- 1...Rc4
- 2.Qxe6#
- 1...Rd4
- 2.Rxe6#
- 2.Qxe6#
- 1...Rf4
- 2.Rxe6#
- 2.Qxe6#
- 1...Rg4
- 2.Rxe6#
- 2.Qxe6#
- 1...Rh4
- 2.Rxe6#
- 2.Qxe6#
- 1...Be5
- 2.Qxe6#
- 1...Sc7
- 2.Qxc7#
- 1...Sg7
- 2.Qc7#
- 1...e5
- 2.Qe6#
- 1...Rxb4
- Tries
- 1.Sxf6?
- threat
- 2.Qd7#
- 1...Rxb4
- 2.Rxe6#
- 1...Sxf6
- 2.Qc7#
- 1...Ke7!
- threat
- 1.Bxe6?
- threat
- 2.Qd7#
- 1...Rxe6
- 2.Qxe6#
- 1...Rxb4!
- threat
- 1.Rd1+?
- 1...Rd4
- 2.Qxe6#
- 1...Bd4!
- 1...Rd4
- 1.Rxe4?
- threat
- 2.Rxe6#
- 2.Qxe6#
- 1...fxe4
- 2.Qxe6#
- 1...Sc7
- 2.Qxc7#
- 1...Be5
- 2.Qxe6#
- 1...Sg7
- 2.Qc7#
- 1...e5
- 2.Qe6#
- 1...Bf7!
- threat
- 1.Rgg1+?
- 1...Rf4
- 2.Rxe6#
- 2.Qxe6#
- 1...Re5
- 2.Rd1#
- 2.Qxe6#
- 1...Be5
- 2.Qxe6#
- 1...e5
- 2.Qe6#
- 1...f4!
- 1...Rf4
- 1.Rg2+?
- 1...Rf4
- 2.Rxe6#
- 2.Qxe6#
- 1...Re5
- 2.Rd1#
- 2.Rd2#
- 2.Qxe6#
- 1...Be5
- 2.Qxe6#
- 1...e5
- 2.Qe6#
- 1...f4!
- 1...Rf4
- 1.Rh3+?
- 1...Rf4
- 2.Rxe6#
- 2.Qxe6#
- 1...Re5
- 2.Rd1#
- 2.Qxe6#
- 1...Be5
- 2.Qxe6#
- 1...e5
- 2.Qe6#
- 1...f4!
- 1...Rf4
- 1.Rg4+?
- 1...Rf4
- 2.Rxe6#
- 2.Qxe6#
- 1...Re5
- 2.Rd1#
- 2.Rd4#
- 2.Qxe6#
- 1...Be5
- 2.Qxe6#
- 1...e5
- 2.Qe6#
- 1...f4!
- 1...Rf4
- 1.Rg5+?
- 1...Rf4
- 2.Rxe6#
- 2.Qxe6#
- 1...Re5
- 2.Rd1#
- 2.Qxe6#
- 1...Be5
- 2.Qxe6#
- 1...e5
- 2.Qe6#
- 1...f4!
- 1...Rf4
- 1.Rxg6+?
- 1...Rf4
- 2.Rxe6#
- 2.Qxe6#
- 1...Re5
- 2.Rd1#
- 2.Qxe6#
- 1...Be5
- 2.Rxe6#
- 2.Qxe6#
- 1...e5
- 2.Qe6#
- 1...f4!
- 1...Rf4
- 1.b5?
- threat
- 2.Qc6#
- 1...Sc7
- 2.Qxc7#
- 1...Rc4!
- threat
- 1.Sxf6?
- Keys
- 1.Se5!
- threat
- 2.Qxe6#
- 1...Kxe5
- 2.Rg5#
- 1...Rxb4
- 2.Qc6#
- 1...Rxe5
- 2.Rd3#
- 1...Rc4
- 2.Qd7#
- 1...Bf7
- 2.Sxf7#
- 1...Sc7
- 2.Qxc7#
- 1...Sg7
- 2.Qc7#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(a);OGATE,XP(G)::R1(A),XP(e)
- R(a);N_GUARD::QAR1(J),XP(e)
- B(f);S_CUTR(a)::QAR1(J),XP(e)
- S(h);N_GUARD::QAB1(J),XS(h)
- S(h);N_GUARD::QAB1(J)
- P(e);S_CUTR(a)::QAR1(J)
- Tries
- Try
- S(K);XB(f)
- Threat
- QAR1(J)
- Vars
- R(a);OGATE,XP(G)::R1(A),XP(e)
- S(h);N_GUARD,XS(K)::QAB1(J)
- Refutation
- K(d);S_FLIGHT
- Try
- B(B);XP(e)
- Threat
- QAR1(J)
- Vars
- R(a);OGATE,XB(B)::QAR1(J),XR(a)
- Refutation
- R(a);XP(G)
- Try
- R(A);CHECK
- Vars
- R(a);P_SPINR(a)::QAR1(J),XP(e)
- Refutation
- B(f);P_SPINB(f)
- Try
- R(A);XR(a)
- Threat
- DUALS(2)
- Vars
- P(b);XR(A)::QAR1(J),XP(e)
- S(h);N_GUARD::QAB1(J),XS(h)
- B(f);::QAR1(J),XP(e)
- S(h);N_GUARD::QAB1(J)
- P(e);::QAR1(J)
- Refutation
- B(g);
- Try
- R(F);CHECK
- Vars
- B(f);P_SPINB(f)::QAR1(J),XP(e)
- P(e);P_SPINP(e)::QAR1(J)
- Refutation
- P(b);P_SPINP(b)
- Try
- R(F);CHECK
- Vars
- B(f);P_SPINB(f)::QAR1(J),XP(e)
- P(e);P_SPINP(e)::QAR1(J)
- Refutation
- P(b);P_SPINP(b)
- Try
- R(F);CHECK
- Vars
- B(f);P_SPINB(f)::QAR1(J),XP(e)
- P(e);P_SPINP(e)::QAR1(J)
- Refutation
- P(b);P_SPINP(b)
- Try
- R(F);CHECK
- Vars
- B(f);P_SPINB(f)::QAR1(J),XP(e)
- P(e);P_SPINP(e)::QAR1(J)
- Refutation
- P(b);P_SPINP(b)
- Try
- R(F);CHECK
- Vars
- B(f);P_SPINB(f)::QAR1(J),XP(e)
- P(e);P_SPINP(e)::QAR1(J)
- Refutation
- P(b);P_SPINP(b)
- Try
- R(F);CHECK,XB(g)
- Vars
- P(e);P_SPINB(f),P_SPINP(e)::QAR1(J)
- Refutation
- P(b);P_SPINP(b)
- Try
- P(G);
- Threat
- QAR1(J)
- Vars
- S(h);N_GUARD::QAB1(J),XS(h)
- Refutation
- R(a);
- Try
- Actual
- S(E);
- Threat
- QAR1(J),XP(e)
- Vars
- K(d);OGATEB,P_SPINR(a),S_FLIGHT,XS(E)::B(C)+R(F)
- R(a);XP(G)::QAR1(J)
- R(a);N_GUARD,XS(E)::R(F)
- R(a);::QAR1(J)
- B(g);N_GUARD::S(E),XB(g)
- S(h);N_GUARD::QAB1(J),XS(h)
- S(h);N_GUARD::QAB1(J)
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).