MESON Chess Problem Database
Problem Display
PID: 11289 (3N2B1/1b2B1P1/8/1nn1k3/R2rPRP1/4P2K/1b5Q/8 w - - 0 1)
Ulehla, Johann Viktor
3rd Prize, Teplitz-Schonauer Ty., 1937
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Rd2
- 2.Rf2#
- 2.Rf5#
- 1...Rd3
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Rxe4
- 2.Rfxe4#
- 2.Rf5#
- 1...Rd5
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Rd6
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Rd7
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Rxd8
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf8#
- 1...Bxe4
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf8#
- 1...Ba6
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bc8
- 2.Sc6#
- 1...Sc3
- 2.exd4#
- 1...Sd6
- 2.Bf6#
- 1...Sxe4
- 2.Rf5#
- 1...Se6
- 2.Sf7#
- 1...Rd1
- Tries
- 1.Bd6+?
- 1...Kxd6
- 2.Rf7#
- 1...Rxd6
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Rf8#
- 1...Sxd6!
- 1...Kxd6
- 1.Bd5?
- threat
- 2.Sf7#
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Rxe4
- 2.Rf5#
- 1...Rxd5
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Sxe4
- 2.Rf5#
- 1...Rd2
- 2.Sf7#
- 2.Rf2#
- 2.Rf5#
- 1...Sd6
- 2.Bf6#
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Sd3
- 2.Sf7#
- 2.Rf5#
- 1...Se6
- 2.Sf7#
- 2.Rf5#
- 1...Bxd5!
- threat
- 1.Bh7?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Rxe4
- 2.Rf5#
- 1...Rxd8
- 2.Rf6#
- 1...Bxe4
- 2.Rf5#
- 1...Sxe4
- 2.Rf5#
- 1...Rd2
- 2.Rf2#
- 2.Rf5#
- 1...Se6
- 2.Sf7#
- 1...Sd3!
- threat
- 1.Qh1?
- threat
- 2.Rf5#
- 1...Bc8
- 2.Sc6#
- 1...Sd6
- 2.Bf6#
- 1...Bxe4!
- threat
- 1.Qg2?
- threat
- 2.Rf5#
- 1...Bc8
- 2.Sc6#
- 1...Sd6
- 2.Bf6#
- 1...Bxe4!
- threat
- 1.Bd6+?
- Keys
- 1.Kg2!
- threat
- 2.Qh5#
- 1...Rd2+
- 2.Rf2#
- 1...Bxe4+
- 2.Rf3#
- 1...Sxe4
- 2.Rf5#
- 1...Bc8
- 2.Sc6#
- 1...Sd6
- 2.Bf6#
- 1...Se6
- 2.Sf7#
- threat
- 1.Kg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- B(f);N_GUARD::S(J)
- B(f);N_GUARD::S(J),XB(f)
- B(f);N_GUARD,P_PINP(G)::S(J)
- S(c);N_GUARD,S_CUTB(a)::P(B),XR(b)
- S(c);SBLOCK::B(H)
- S(d);SBLOCK,XP(E)::QAB(A)+R(F),DCHECK
- S(d);SBLOCK::S(J)
- Tries
- Try
- B(H);CHECK
- Vars
- K(e);S_FLIGHT,XB(H)::QAB(A)+R(F)
- Refutation
- S(c);XB(H)
- Try
- B(K);
- Threat
- DUALS(8)
- Vars
- R(b);XP(E)::QAB(A)+R(F),DCHECK
- S(d);XP(E)::QAB(A)+R(F),DCHECK
- Refutation
- B(f);XB(K)
- Try
- B(K);
- Threat
- DUALS(6)
- Vars
- R(b);XP(E)::QAB(A)+R(F),DCHECK
- R(b);XS(J)::QAB(A)+R(F)
- B(f);SBLOCK,XP(E)::QAB(A)+R(F),DCHECK
- S(d);SBLOCK,XP(E)::QAB(A)+R(F),DCHECK
- S(d);SBLOCK::S(J)
- Refutation
- S(d);
- Try
- Q(A);
- Threat
- R1(F)
- Vars
- B(f);N_GUARD,P_PINP(G)::S(J)
- S(c);SBLOCK::B(H)
- Refutation
- B(f);XP(E)
- Try
- Q(A);
- Threat
- R1(F)
- Vars
- B(f);N_GUARD,P_PINP(G)::S(J)
- S(c);SBLOCK::B(H)
- Refutation
- B(f);XP(E)
- Try
- Actual
- K(C);P_SPINP(E),S_FLIGHT
- Threat
- QAR(A)
- Vars
- R(b);CHECK::QAB(A)+R(F)
- B(f);CHECK,SBLOCK,XP(E)::QAB(A)+R(F)
- S(d);SBLOCK,XP(E)::QAB(A)+R(F),DCHECK
- B(f);N_GUARD,N_PINP(E)::S(J)
- S(c);SBLOCK::B(H)
- S(d);SBLOCK::S(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).