MESON Chess Problem Database
Problem Display
PID: 251280 (2KR4/2PB4/p3r3/2B5/Q7/pp1k2pq/r1N3P1/nNbbR3 w - - 0 1)
Leites, Samuil Davidovich
3rd HM., Schakend Nederland, 1976
#2
10 + 11
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxc2
- 2.Bb5#
- 2.Bxe6#
- 2.Qd4#
- 1...Re2
- 2.Bf5#
- 1...Re3
- 2.Bf5#
- 1...Re4
- 2.Qxe4#
- 1...Re5
- 2.Bf5#
- 1...Rb6
- 2.Bf5#
- 2.Qe4#
- 1...Rc6
- 2.Bf5#
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Rf6
- 2.Bf5#
- 2.Qe4#
- 1...Rg6
- 2.Bf5#
- 2.Qe4#
- 1...Rh6
- 2.Bf5#
- 2.Qe4#
- 1...Re7
- 2.Bf5#
- 1...Re8
- 2.Bf5#
- 1...Bxc2
- 2.Bb5#
- 2.Bxe6#
- 2.Qd4#
- 1...Sxc2
- 2.Bb5#
- 2.Qxb3#
- 1...bxc2
- 2.Bb5#
- 2.Bxe6#
- 2.Qd4#
- 1...b2
- 2.Bb5#
- 2.Bxe6#
- 1...Rxc2
- Tries
- 1.Sxa1?
- threat
- 2.Bb5#
- 2.Bxe6#
- 2.Qd4#
- 1...Qxg2
- 2.Bb5#
- 2.Qd4#
- 1...Rxe1
- 2.Bg4#
- 1...Qg4
- 2.Bb5#
- 1...Qf5
- 2.Bb5#
- 2.Qd4#
- 1...Qh4
- 2.Bb5#
- 1...Qh5
- 2.Bb5#
- 2.Qd4#
- 1...Qh7
- 2.Bb5#
- 2.Qd4#
- 1...Qh8
- 2.Bb5#
- 1...Ree2
- 2.Bxh3#
- 2.Bg4#
- 2.Bf5#
- 2.Be6#
- 2.Qd4#
- 1...Re3
- 2.Bxh3#
- 2.Bg4#
- 2.Bf5#
- 2.Be6#
- 2.Qd4#
- 1...Re4
- 2.Bf5#
- 2.Qxe4#
- 1...Re5
- 2.Bf5#
- 2.Qd4#
- 2.Qxa6#
- 1...Rb6
- 2.Bf5#
- 2.Qd4#
- 2.Qe4#
- 1...Rc6
- 2.Bf5#
- 2.Qd4#
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Rf6
- 2.Bf5#
- 2.Be6#
- 2.Qd4#
- 2.Qe4#
- 1...Rg6
- 2.Bf5#
- 2.Be6#
- 2.Qd4#
- 2.Qe4#
- 1...Rh6
- 2.Bf5#
- 2.Be6#
- 2.Qd4#
- 2.Qe4#
- 1...Re7
- 2.Bf5#
- 2.Qd4#
- 2.Qxa6#
- 1...Re8
- 2.Bf5#
- 2.Qd4#
- 2.Qxa6#
- 1...Bb2
- 2.Bb5#
- 1...Be3
- 2.Bb5#
- 1...Bf4
- 2.Bb5#
- 2.Qd4#
- 1...Bg5
- 2.Bb5#
- 2.Qd4#
- 1...Bf3
- 2.Bb5#
- 2.Qxb3#
- 2.Qd4#
- 1...Rxa1!
- threat
- 1.Se3?
- threat
- 2.Bb5#
- 2.Bxe6#
- 2.Qc4#
- 2.Qd4#
- 1...Qxg2
- 2.Bb5#
- 2.Qc4#
- 2.Qd4#
- 1...Rxe3
- 2.Bf5#
- 1...Qg4
- 2.Bb5#
- 1...Qf5
- 2.Bb5#
- 2.Qc4#
- 2.Qd4#
- 1...Qh4
- 2.Bb5#
- 1...Qh5
- 2.Bb5#
- 2.Qc4#
- 2.Qd4#
- 1...Qh7
- 2.Bb5#
- 2.Qc4#
- 2.Qd4#
- 1...Qh8
- 2.Bb5#
- 2.Qc4#
- 1...Rc2
- 2.Bb5#
- 2.Bxe6#
- 2.Qd4#
- 1...Re4
- 2.Bf5#
- 1...Re5
- 2.Bf5#
- 2.Qc4#
- 2.Qd4#
- 1...Rb6
- 2.Bf5#
- 2.Qc4#
- 2.Qd4#
- 1...Rc6
- 2.Bf5#
- 2.Qc4#
- 2.Qd4#
- 1...Rd6
- 2.Qc4#
- 1...Rf6
- 2.Bf5#
- 2.Be6#
- 2.Qc4#
- 2.Qd4#
- 1...Rg6
- 2.Bf5#
- 2.Be6#
- 2.Qc4#
- 2.Qd4#
- 1...Rh6
- 2.Bf5#
- 2.Be6#
- 2.Qc4#
- 2.Qd4#
- 1...Re7
- 2.Bf5#
- 2.Qc4#
- 2.Qd4#
- 1...Re8
- 2.Bf5#
- 2.Qc4#
- 2.Qd4#
- 1...Bb2
- 2.Bb5#
- 2.Qc4#
- 1...Bf3
- 2.Bb5#
- 2.Qc4#
- 2.Qd4#
- 1...Sc2
- 2.Bb5#
- 2.Qc4#
- 1...Bxe3!
- threat
- 1.Rxd1+?
- 1...Ke2
- 2.Sc3#
- 1...Bd2
- 2.Rxd2#
- 1...Kxc2!
- 1...Ke2
- 1.Sxa1?
- Keys
- 1.Re2!
- threat
- 2.Bb5#
- 1...Kxe2
- 2.Qc4#
- 1...Rxe2
- 2.Bf5#
- 1...Bxe2
- 2.Se1#
- 1...Bd2
- 2.Rxd2#
- 1...Re3
- 2.Bg4#
- 1...Re4
- 2.Qxe4#
- 1...Re5
- 2.Qxa6#
- 1...Rb6
- 2.Qe4#
- 1...Rc6
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Rf6
- 2.Qe4#
- 1...Rg6
- 2.Qe4#
- 1...Rh6
- 2.Qe4#
- 1...Re7
- 2.Qxa6#
- 1...Re8
- 2.Qxa6#
- threat
- 1.Re2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- R(k);OGATE,P_PINB(H)::R(J)+B(H),DCHECK
- R(k);N_GUARD,P_PINB(H)::QAB1(E),XR(k)
- R(k);N_GUARD,P_PINB(H)::QAB1(E)
- R(k);OGATE,P_PINB(H),P_PINR(J)::R(J)+B(H),DCHECK
- Tries
- Try
- S(C);XS(a)
- Threat
- DUALS(3)
- Vars
- R(k);OGATE,P_PINB(H),XR(B)::R(J)+B(H)
- Q(i);::R(J)+B(H),DCHECK
- Q(i);P_PINR(J)::R(J)+B(H),DCHECK
- R(k);N_GUARD,P_PINB(H)::QAB1(E)
- B(b);::R(J)+B(H),DCHECK
- Refutation
- R(d);XS(C)
- Try
- S(C);
- Threat
- DUALS(4)
- Vars
- R(k);OGATE,P_PINB(H),XS(C)::R(J)+B(H),DCHECK
- Q(i);::R(J)+B(H),DCHECK
- R(k);OGATE,P_PINB(H)::R(J)+B(H)
- R(k);P_PINB(H)::QAB1(E)
- Refutation
- B(b);XS(C)
- Try
- R(B);CHECK,XB(c)
- Vars
- K(g);N_GUARD,S_CUTB(b),S_FLIGHT::S(A)
- B(b);N_GUARD,P_SPINB(b)::R1(B),XB(b)
- Refutation
- K(g);P_SPINP(f),S_FLIGHT,XS(C)
- Try
- Actual
- R(B);
- Threat
- R(J)+B(H),DCHECK
- Vars
- K(g);N_GUARD,S_FLIGHT,XR(B)::QAB(E)
- R(k);OGATE,P_PINB(H),SBLOCK,XR(B)::R(J)+B(H),DCHECK
- B(c);SBLOCK,XR(B)::S(C)
- B(b);N_GUARD::R1(B),XB(b)
- R(k);OGATE,P_PINB(H)::R(J)+B(H)
- R(k);N_GUARD,P_PINB(H)::QAB1(E),XR(k)
- R(k);N_GUARD,P_PINB(H)::QAB(E),XP(j)
- R(k);N_GUARD,P_PINB(H)::QAB1(E)
- R(k);N_GUARD,P_PINB(H),P_PINP(G)::QAB1(E)
- R(k);N_GUARD,P_PINB(H),P_PINR(J)::QAB(E),XP(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).