MESON Chess Problem Database
Problem Display
PID: 52633 (2rbB1K1/1p5R/pn1p4/3k2N1/1PN2R2/Q1B1P3/3r4/8 w - - 0 1)
Sonnenfeld, Felix Alexander
11th Comm., Match: Brazil - Israel, 1969-1971
#2
10 + 8
| 5309 | O Mosqueteiro do Rei | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Rd4#
- 1...Rb2
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Re2
- 2.Rd4#
- 1...Rf2
- 2.Rd4#
- 1...Rg2
- 2.Rd4#
- 1...Rh2
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Rxc4
- 2.Rf5#
- 1...Rc6
- 2.Bf7#
- 1...Rc7
- 2.Sxb6#
- 1...Ra8
- 2.Qa5#
- 1...Rb8
- 2.Qa5#
- 1...Bf6
- 2.Sxb6#
- 1...Bc7
- 2.Qa5#
- 1...Be7
- 2.Sxb6#
- 1...Sxc4
- 2.e4#
- 1...Ra2
- Tries
- 1.Sa5?
- threat
- 2.Bf7#
- 2.Rf5#
- 2.e4#
- 1...Rxc3
- 2.Rf5#
- 1...Rd4
- 2.Rf5#
- 1...Re2
- 2.Bf7#
- 2.Rf5#
- 1...Rf2
- 2.Bf7#
- 2.e4#
- 1...Rc4
- 2.Bf7#
- 2.Rf5#
- 1...Rc7
- 2.Rf5#
- 2.e4#
- 1...Bf6
- 2.e4#
- 1...Bc7
- 2.Rf5#
- 2.e4#
- 1...Be7
- 2.Rf5#
- 2.e4#
- 1...Sc4
- 2.Bf7#
- 2.e4#
- 1...Sd7
- 2.Bf7#
- 2.e4#
- 1...Bxg5!
- threat
- 1.Rc7?
- threat
- 2.Sxb6#
- 2.Bf7#
- 2.Rf5#
- 2.Qa5#
- 2.e4#
- 1...Rxc7
- 2.Sxb6#
- 1...Bxc7
- 2.Qa5#
- 1...Sxc4
- 2.Bf7#
- 2.e4#
- 1...Ra2
- 2.Sxb6#
- 2.Bf7#
- 2.Rd4#
- 2.Rf5#
- 2.e4#
- 1...Re2
- 2.Sxb6#
- 2.Bf7#
- 2.Rd4#
- 2.Rf5#
- 2.Qa5#
- 1...Rf2
- 2.Sxb6#
- 2.Bf7#
- 2.Rd4#
- 2.Qa5#
- 2.e4#
- 1...Rd4
- 2.Bf7#
- 2.Rxd4#
- 2.Rf5#
- 2.Qa5#
- 1...Bf6
- 2.Sxb6#
- 2.Qa5#
- 2.e4#
- 1...Be7
- 2.Sxb6#
- 2.Rf5#
- 2.Qa5#
- 2.e4#
- 1...Sa4
- 2.Bf7#
- 2.Rf5#
- 2.e4#
- 1...Sd7
- 2.Bf7#
- 2.e4#
- 1...Sa8
- 2.Bf7#
- 2.Rf5#
- 2.e4#
- 1...a5
- 2.Sxb6#
- 2.Bf7#
- 2.Rf5#
- 2.Qxa5#
- 2.e4#
- 1...Bxg5!
- threat
- 1.Qa2?
- threat
- 2.Sxb6#
- 2.Rf5#
- 2.Qxd2#
- 2.e4#
- 1...Rxa2
- 2.Rd4#
- 1...Rxc4
- 2.Rf5#
- 2.e4#
- 1...Bxg5
- 2.Sxb6#
- 1...Sxc4
- 2.Rf5#
- 2.e4#
- 1...Rd1
- 2.Sxb6#
- 2.Rf5#
- 2.Qg2#
- 2.e4#
- 1...Rb2
- 2.Sxb6#
- 2.Rd4#
- 2.Rf5#
- 2.e4#
- 1...Rc2
- 2.Sxb6#
- 2.Rd4#
- 2.Rf5#
- 2.e4#
- 1...Re2
- 2.Sxb6#
- 2.Rd4#
- 2.Rf5#
- 1...Rf2
- 2.Sxb6#
- 2.Rd4#
- 2.e4#
- 1...Rg2
- 2.Sxb6#
- 2.Rd4#
- 2.Rf5#
- 2.Qxg2#
- 2.e4#
- 1...Rh2
- 2.Sxb6#
- 2.Rd4#
- 2.Rf5#
- 2.e4#
- 1...Rd3
- 2.Sxb6#
- 2.Rf5#
- 2.Qg2#
- 2.e4#
- 1...Rd4
- 2.Rxd4#
- 2.Rf5#
- 1...Bf6
- 2.Sxb6#
- 2.e4#
- 1...Sa4
- 2.Sb6#
- 2.Rf5#
- 2.Qxd2#
- 2.e4#
- 1...Sa8
- 2.Sb6#
- 2.Rf5#
- 2.Qxd2#
- 2.e4#
- 1...Sd7!
- threat
- 1.Qb3?
- threat
- 2.Sxb6#
- 2.Rf5#
- 2.e4#
- 1...Rxc4
- 2.Rf5#
- 2.e4#
- 1...Bxg5
- 2.Sxb6#
- 1...Sxc4
- 2.Rf5#
- 2.e4#
- 1...Re2
- 2.Sxb6#
- 2.Rd4#
- 2.Rf5#
- 1...Rf2
- 2.Sxb6#
- 2.Rd4#
- 2.e4#
- 1...Rd4
- 2.Rxd4#
- 2.Rf5#
- 1...Bf6
- 2.Sxb6#
- 2.e4#
- 1...Sa4
- 2.Sb6#
- 2.Rf5#
- 2.e4#
- 1...Sa8
- 2.Sb6#
- 2.Rf5#
- 2.e4#
- 1...Sd7!
- threat
- 1.b5?
- threat
- 2.Bf7#
- 2.Qxd6#
- 1...Rxc4
- 2.Bf7#
- 2.Rf5#
- 1...Bxg5
- 2.Qxd6#
- 1...Sxc4
- 2.Bf7#
- 2.e4#
- 1...axb5
- 2.Qxd6#
- 1...Rd4
- 2.Bf7#
- 2.Rxd4#
- 1...Rc5
- 2.Bf7#
- 1...Rc6
- 2.Bf7#
- 1...Rc7
- 2.Sxb6#
- 2.Qxd6#
- 1...Bf6
- 2.Sxb6#
- 2.Qxd6#
- 1...Be7
- 2.Sxb6#
- 1...Bc7!
- threat
- 1.Sa5?
- Keys
- 1.Rh6!
- threat
- 2.Rxd6#
- 1...Rxc4
- 2.Rf5#
- 1...Sxc4
- 2.e4#
- 1...Rd4
- 2.Rxd4#
- 1...Rc6
- 2.Bf7#
- 1...Bf6
- 2.Sxb6#
- 1...Bc7
- 2.Qa5#
- 1...Be7
- 2.Sxb6#
- threat
- 1.Rh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- R(a);N_GUARD::R1(F)
- R(a);N_GUARD,P_PINS(G)::R1(F)
- R(a);N_GUARD::R1(F),XR(a)
- R(g);SBLOCK,XS(E)::R(F)
- R(g);SBLOCK::B(I)
- R(g);S_CUTB(h)::S(E),XS(d)
- R(g);N_GUARD::QAR(A)
- B(h);N_GUARD,P_PINB(I)::S(E),XS(d)
- B(h);P_PINB(I),S_CUTR(g)::QAR(A)
- S(d);SBLOCK,XS(E)::P(C)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(g);XB(B)::R(F)
- R(a);::R(F)
- B(h);P_PINB(I)::P(C)
- Refutation
- B(h);P_PINB(I),XS(G)
- Try
- R(H);
- Threat
- DUALS(5)
- Vars
- R(g);XR(H)::S(E),XS(d)
- B(h);P_PINB(I),XR(H)::QAR(A)
- Refutation
- B(h);P_PINB(I),XS(G)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(a);N_GUARD,XQ(A)::R1(F)
- B(h);P_PINB(I),XS(G)::QAB(A)+S(E),DCHECK,XS(d)
- Refutation
- S(d);
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(h);P_PINB(I),XS(G)::QAB(A)+S(E),DCHECK,XS(d)
- Refutation
- S(d);
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- B(h);P_PINB(I),XS(G)::QAR1(A),XP(e)
- P(c);XP(D)::QAR1(A),XP(e)
- R(g);::B(I)
- B(h);N_GUARD,P_PINB(I)::S(E),XS(d)
- Refutation
- B(h);P_PINB(I)
- Try
- Actual
- R(H);
- Threat
- R1(H),XP(e)
- Vars
- R(g);SBLOCK,XS(E)::R(F)
- S(d);SBLOCK,XS(E)::P(C)
- R(a);N_GUARD::R1(F),XR(a)
- R(g);SBLOCK::B(I)
- B(h);N_GUARD,P_PINB(I)::S(E),XS(d)
- B(h);P_PINB(I),S_CUTR(g)::QAR(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).