MESON Chess Problem Database
Problem Display
PID: 83787 (1qbr4/1pb3n1/5R2/pQ1R4/K1P1k3/5p1r/2N1P1nB/8 w - - 0 1)
Ellerman, Arnoldo
Problemas, 1969
#2
8 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxh2
- 2.exf3#
- 1...Rh4
- 2.exf3#
- 1...Rh5
- 2.exf3#
- 1...Rh6
- 2.exf3#
- 1...Rh7
- 2.exf3#
- 1...Rhh8
- 2.exf3#
- 1...Rxd5
- 2.Qxd5#
- 1...Rd6
- 2.Re5#
- 1...Re8
- 2.Rd4#
- 1...Rf8
- 2.Rd4#
- 1...Rg8
- 2.Rd4#
- 1...Rdh8
- 2.Rd4#
- 1...Bg3
- 2.exf3#
- 1...Bd6
- 2.Rd4#
- 1...Bd7
- 2.Rd4#
- 1...Rxh2
- Tries
- 1.Bd6?
- threat
- 2.Rd4#
- 2.Re5#
- 1...Rxd6
- 2.Re5#
- 1...Bxd6
- 2.Rd4#
- 1...fxe2
- 2.Rd4#
- 1...Qa7
- 2.Re5#
- 1...Rh5
- 2.Rd4#
- 2.exf3#
- 1...Re8
- 2.Rd4#
- 1...Bb6
- 2.Re5#
- 1...Bf5
- 2.Rd4#
- 1...Se6
- 2.Re5#
- 1...Sf5!
- threat
- 1.Rxd8?
- threat
- 2.Rd4#
- 2.Qd5#
- 1...Bxd8
- 2.Qd5#
- 1...Qa7
- 2.Qd5#
- 1...Rh5
- 2.Rd4#
- 2.exf3#
- 1...Be5
- 2.Qd5#
- 1...Bb6
- 2.Qd5#
- 1...Bd6
- 2.Qd5#
- 1...Be6
- 2.Rd4#
- 1...Se3
- 2.Rd4#
- 1...Sf4
- 2.Rd4#
- 1...Sf5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 2.Qf5#
- 1...Bd7!
- threat
- 1.Rfd6?
- threat
- 2.Rd4#
- 2.Re5#
- 1...Rxh2
- 2.Rd4#
- 1...Rxd6
- 2.Re5#
- 1...Bxd6
- 2.Rd4#
- 1...Rg3
- 2.Rd4#
- 1...Qa7
- 2.Re5#
- 1...Rh5
- 2.Rd4#
- 1...Re8
- 2.Rd4#
- 1...Bb6
- 2.Re5#
- 1...Sf5
- 2.Re5#
- 1...Se6
- 2.Re5#
- 1...fxe2!
- threat
- 1.Bd6?
- Keys
- 1.Rdd6!
- threat
- 2.Qd5#
- 2.Qe5#
- 1...Rxh2
- 2.Qd5#
- 2.exf3#
- 1...Rxd6
- 2.Qe5#
- 1...Bxd6
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rh5
- 2.exf3#
- 1...Re8
- 2.Rd4#
- 2.Qd5#
- 1...Be6
- 2.Qe5#
- 1...Bd7
- 2.Rd4#
- 1...Se3
- 2.Rf4#
- 2.Qe5#
- 1...Sf4
- 2.Rxf4#
- threat
- 1.Rdd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(c);N_GUARD,XB(C)::P(B),XP(b)
- R(c);N_GUARD::P(B),XP(b)
- R(k);OGATE,XR(G)::QAB1(F),XR(k)
- R(k);S_CUTB(g)::R1(G)
- R(k);N_GUARD::R1(G)
- B(g);S_CUTR(c)::P(B),XP(b)
- B(g);S_CUTR(k)::R1(G)
- B(j);P_PINQ(F),S_CUTR(k)::R1(G)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(k);XB(C)::R1(G)
- B(g);XB(C)::R1(G)
- P(b);XP(B)::R1(G)
- Q(i);::R1(G)
- R(k);::R1(G)
- B(g);::R1(G)
- B(j);::R1(G)
- S(h);::R1(G)
- Refutation
- S(h);
- Try
- R(G);XR(k)
- Threat
- DUALS(2)
- Vars
- B(g);XR(G)::QAB1(F)
- Q(i);::QAB1(F)
- B(g);::QAB1(F)
- B(j);::R1(G)
- S(a);::R1(G)
- S(h);::QAB1(F)
- Refutation
- B(j);P_PINQ(F)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- R(c);XB(C)::R1(G)
- R(k);XR(H)::R1(G)
- B(g);XR(H)::R1(G)
- R(c);::R1(G)
- Q(i);::R1(G)
- R(k);::R1(G)
- B(g);::R1(G)
- S(h);::R1(G)
- Refutation
- P(b);XP(B)
- Try
- Actual
- R(G);
- Threat
- DUALS(2)
- Vars
- R(k);XR(G)::QAR1(F)
- B(g);XR(G)::QAB1(F)
- R(c);::QAB1(F)
- R(c);N_GUARD::P(B),XP(b)
- B(j);::QAR1(F)
- B(j);P_PINQ(F),S_CUTR(k)::R1(G)
- S(a);N_GUARD::R1(H),XS(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).