MESON Chess Problem Database
Problem Display
PID: 71981 (4Rbr1/r2pp1P1/p4P2/3bk2p/4NR1P/n1P1NnBB/2P5/1Q5K w - - 0 1)
Avner, Uri
Einat, Paz
Hirschenson, Aaron
19th Place, 08. WCCT, 2006-2008
#2
13 + 11
| 14561 | 08. WCCT Award | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxe4
- 2.Rxf3#
- 1...Be6
- 2.Rg4#
- 1...Sxh4
- 2.Rxh4#
- 1...e6
- 2.Rg4#
- 1...Bxe4
- Tries
- 1.Sc5?
- threat
- 2.Rxf3#
- 2.Rf5#
- 1...Se1+
- 2.Rf3#
- 1...Sg1+
- 2.Rf3#
- 1...Sd2+
- 2.Rf3#
- 1...Sh2+
- 2.Rf3#
- 1...Sd4+
- 2.Rf3#
- 1...Sxh4+
- 2.Rf3#
- 1...Sg5+
- 2.Rf3#
- 1...Rxg7
- 2.Rf5#
- 1...Kd6!
- threat
- 1.Bf5?
- threat
- 2.Rxf3#
- 2.Rg4#
- 1...Rxg7
- 2.Rg4#
- 1...Sxh4
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rg4#
- 2.Rxh4#
- 1...Se1
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rg4#
- 1...Sg1
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rg4#
- 1...Sd2
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rg4#
- 1...Sh2
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rg4#
- 1...Sd4
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rg4#
- 1...Sg5
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rg4#
- 1...Bxe4!
- threat
- 1.Bxd7?
- threat
- 2.Rg4#
- 1...Bxe4
- 2.Rxf3#
- 2.Rf5#
- 1...Rxd7!
- threat
- 1.Rxe7+?
- 1...Be6
- 2.Rg4#
- 1...Bxe7!
- 1...Be6
- 1.Qb4?
- threat
- 2.Rxf3#
- 2.Qd6#
- 1...Rxg7
- 2.Qd6#
- 1...Bxe4
- 2.Rxf3#
- 1...Sxh4
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rxh4#
- 2.Qd6#
- 2.Qd4#
- 1...Bc4
- 2.Qd6#
- 1...Be6
- 2.Rxf3#
- 2.Rg4#
- 2.Rf5#
- 1...Sb5
- 2.Rxf3#
- 1...Se1
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Qd6#
- 2.Qd4#
- 1...Sg1
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Qd6#
- 2.Qd4#
- 1...Sd2
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Qd6#
- 2.Qd4#
- 1...Sh2
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Qd6#
- 2.Qd4#
- 1...Sd4
- 2.Qd6#
- 2.Qxd4#
- 2.cxd4#
- 1...Sg5
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Qd6#
- 2.Qd4#
- 1...d6
- 2.Rxf3#
- 2.Qxd6#
- 1...e6
- 2.Rxf3#
- 2.Rg4#
- 2.Rf5#
- 1...Sc4!
- threat
- 1.Qb6?
- threat
- 2.Rg4#
- 2.Qd6#
- 1...Bxe4
- 2.Rxf3#
- 2.Rg4#
- 2.Rf5#
- 1...Be6
- 2.Rg4#
- 1...Sc4
- 2.Rg4#
- 1...Sb5
- 2.Rg4#
- 1...d6
- 2.Qxd6#
- 1...e6
- 2.Rg4#
- 1...Bc6!
- threat
- 1.Qb8+?
- 1...d6
- 2.Qxd6#
- 1...Rc7!
- 1...d6
- 1.Sc5?
- Keys
- 1.Qd1!
- threat
- 2.Qxd5#
- 1...Bxe4
- 2.Rxf3#
- 1...Ba2
- 2.Qd6#
- 1...Bb3
- 2.Qd6#
- 1...Bc4
- 2.Qd6#
- 1...Bc6
- 2.Qd6#
- 1...Be6
- 2.Rg4#
- 1...Bb7
- 2.Qd6#
- 1...Bf7
- 2.Qd6#
- 1...Ba8
- 2.Qd6#
- 1...Sd2
- 2.Qxh5#
- 1...Sd4
- 2.Qxd4#
- 2.cxd4#
- threat
- 1.Qd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 2
- Sets
- B(c);SBLOCK,XS(H)::B(F)+R(I),XS(b)
- B(c);N_SPINP(i),SBLOCK::B(F)+R(I)
- S(b);OGATE,P_PINS(H),XP(J)::B(F)+R(I),XS(b)
- P(i);::B(F)+R(I)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK::B(F)+R(I)
- S(b);CHECK,XP(J)::B(F)+R(I)
- R(k);XP(L)::B(F)+R(I),DCHECK
- Refutation
- K(d);N_SPINP(i),S_FLIGHT
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(k);XP(L)::B(F)+R(I)
- Refutation
- B(c);XS(H)
- Try
- B(G);XP(h)
- Threat
- B(F)+R(I)
- Refutation
- R(g);XB(G)
- Try
- R(M);CHECK,XP(i)
- Vars
- B(c);P_SPINB(c)::B(F)+R(I)
- Refutation
- B(j);XR(M)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(k);XP(L)::QAB1(A)
- B(c);XS(H)::B(F)+R(I),XS(b)
- B(c);::QAB1(A)
- S(a);::B(F)+R(I),XS(b)
- Refutation
- S(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(c);N_SPINP(i)::B(F)+R(I)
- S(a);::B(F)+R(I)
- P(h);::QAB1(A),XP(h)
- P(i);::B(F)+R(I)
- Refutation
- B(c);
- Try
- Q(A);CHECK
- Vars
- P(h);N_SPINP(i),P_SPINP(h)::QAB1(A),XP(h)
- Refutation
- R(g);P_SPINR(g)
- Try
- Actual
- Q(A);
- Threat
- QAR1(A),XB(c)
- Vars
- B(c);SBLOCK,XS(H)::B(F)+R(I),XS(b)
- B(c);OGATE::QAB1(A)
- B(c);N_SPINP(i),SBLOCK::B(F)+R(I)
- S(b);OGATE,P_PINS(H)::QAR(A),XP(e)
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).