MESON Chess Problem Database
Problem Display
PID: 242292 (7b/RR2p2K/2k5/3r1N1p/p3r3/Q3N3/7B/1b5B w - - 0 1)
Morra, Juan Carlos
Source?, 0000
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Bxd5#
- 1...Rf4
- 2.Bxd5#
- 1...Rg4
- 2.Bxd5#
- 1...Rh4
- 2.Bxd5#
- 1...Ree5
- 2.Qc3#
- 1...Re6
- 2.Bxd5#
- 1...Rd1
- 2.Sxe7#
- 1...Rd2
- 2.Sxe7#
- 1...Rd3
- 2.Sxe7#
- 1...Rd4
- 2.Sxe7#
- 1...Ra5
- 2.Sxe7#
- 1...Rb5
- 2.Sxe7#
- 1...Rc5
- 2.Sxe7#
- 1...Rde5
- 2.Sd4#
- 1...Rd6
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Be5
- 2.Sxe7#
- 1...e5
- 2.Se7#
- 1...e6
- 2.Se7#
- 1...Rc4
- Tries
- 1.Bxe4?
- threat
- 2.Sxe7#
- 2.Bxd5#
- 1...Ba2
- 2.Sxe7#
- 1...Bf6
- 2.Bxd5#
- 1...e5
- 2.Se7#
- 2.Bxd5#
- 2.Qd6#
- 2.Qc3#
- 1...e6
- 2.Se7#
- 2.Qd6#
- 1...Bxe4!
- threat
- 1.Qb4?
- threat
- 2.Ra6#
- 2.Rb6#
- 2.Rc7#
- 2.Qb6#
- 1...Ra5
- 2.Sxe7#
- 2.Rb6#
- 2.Rc7#
- 2.Qb6#
- 1...Rb5
- 2.Sxe7#
- 2.Qxb5#
- 1...Rd7
- 2.Ra6#
- 2.Rb6#
- 2.Qc4#
- 2.Qb5#
- 2.Qb6#
- 1...Bd3
- 2.Rb6#
- 2.Rc7#
- 2.Qb6#
- 1...Bd4
- 2.Rc7#
- 1...Be5
- 2.Sxe7#
- 2.Ra6#
- 2.Rb6#
- 2.Qb6#
- 1...Rxb4!
- threat
- 1.Qc5+?
- 1...Rxc5
- 2.Sxe7#
- 1...Kxc5!
- 1...Rxc5
- 1.Qb3?
- threat
- 2.Rc7#
- 2.Qxd5#
- 2.Qb6#
- 1...Kc5
- 2.Rc7#
- 2.Qxd5#
- 2.Qb5#
- 2.Qb6#
- 1...Rxf5
- 2.Rc7#
- 2.Qb6#
- 1...Rb4
- 2.Qxd5#
- 1...Rc4
- 2.Rc7#
- 2.Qxc4#
- 2.Qb5#
- 2.Qb6#
- 1...Red4
- 2.Rc7#
- 2.Qb5#
- 2.Qb6#
- 1...Ree5
- 2.Rc7#
- 2.Qc4#
- 2.Qc3#
- 2.Qb5#
- 2.Qb6#
- 1...Rd1
- 2.Rc7#
- 2.Qc4#
- 2.Qb5#
- 2.Qb6#
- 1...Rd2
- 2.Rc7#
- 2.Qc4#
- 2.Qb5#
- 2.Qb6#
- 1...Rd3
- 2.Rc7#
- 2.Qc4#
- 2.Qb5#
- 2.Qb6#
- 1...Rdd4
- 2.Rc7#
- 2.Qb5#
- 2.Qb6#
- 1...Ra5
- 2.Rc7#
- 2.Qb6#
- 1...Rb5
- 2.Qxb5#
- 1...Rc5
- 2.Sxe7#
- 2.Ra6#
- 2.Rb6#
- 2.Rc7#
- 2.Qe6#
- 2.Qb6#
- 1...Rde5
- 2.Rc7#
- 2.Qb6#
- 1...Rd6
- 2.Rc7#
- 2.Qc4#
- 2.Qb5#
- 2.Qb6#
- 1...Rd7
- 2.Qc4#
- 2.Qb5#
- 2.Qb6#
- 1...Rd8
- 2.Rc7#
- 2.Qc4#
- 2.Qb5#
- 2.Qb6#
- 1...Ba2
- 2.Rc7#
- 2.Qb6#
- 1...Bd4
- 2.Rc7#
- 2.Qxd5#
- 1...Be5
- 2.Qxd5#
- 2.Qb6#
- 1...e6
- 2.Rc7#
- 2.Qb6#
- 1...axb3!
- threat
- 1.Qc3+?
- 1...Rc4
- 2.Qxc4#
- 1...Rc5
- 2.Sxe7#
- 1...Bxc3!
- 1...Rc4
- 1.Qxa4+?
- 1...Kc5
- 2.Ra5#
- 2.Qb5#
- 1...Rb5
- 2.Qxb5#
- 1...Rxa4!
- 1...Kc5
- 1.Bxe4?
- Keys
- 1.Rb8!
- threat
- 2.Rc7#
- 1...Rf4
- 2.Bxd5#
- 1...Ree5
- 2.Qc3#
- 1...Rde5
- 2.Sd4#
- 1...Rd6
- 2.Sxe7#
- 1...Rd7
- 2.Ra6#
- 1...Be5
- 2.Sxe7#
- 1...e5
- 2.Se7#
- threat
- 1.Rb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- R(c);OGATE,P_PINS(E),P_SPINR(d)::B(A),XR(d)
- R(c);N_GUARD,P_PINS(E),P_SPINR(d),S_CUTB(h)::QAR(C)
- R(d);P_SPINR(c)::S(E),XP(g)
- R(d);N_GUARD,P_SPINR(c),S_CUTB(h)::S(E)
- B(h);S_CUTR(c)::S(E),XP(g)
- P(g);S_CUTR(c)::S(E)
- Tries
- Try
- B(A);P_PINR(d),XR(c)
- Threat
- DUALS(2)
- Vars
- B(a);::S(E),XP(g)
- B(h);::B(A),XR(d)
- Refutation
- B(a);N_SPINR(d),P_PINS(E),XB(A)
- Try
- Q(C);
- Threat
- DUALS(4)
- Vars
- B(h);::R1(G)
- Refutation
- R(c);P_PINS(E),P_SPINR(d),XQ(C)
- Try
- Q(C);CHECK
- Vars
- R(d);P_SPINR(c),SBLOCK,XQ(C)::S(E),XP(g)
- Refutation
- K(f);P-FLIGHT,XQ(C)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- R(c);P_PINS(E),P_SPINR(d)::QAB1(C),XR(d)
- R(d);N_GUARD,P_SPINR(c)::QAB1(C),XR(d)
- Refutation
- P(b);XQ(C)
- Try
- Q(C);CHECK
- Vars
- R(c);N_GUARD,P_PINS(E),P_SPINR(c),S_CUTR(d)::QAR2(C),XR(c)
- R(d);P_SPINR(c)::S(E),XP(g)
- Refutation
- B(h);XQ(C)
- Try
- Q(C);CHECK,XP(b)
- Vars
- R(d);N_GUARD,P_SPINR(c)::QAB1(C),XR(d)
- Refutation
- R(c);P_PINS(E),P_SPINR(d),XQ(C)
- Try
- Actual
- R(G);
- Threat
- R1(F)
- Vars
- R(c);OGATE,P_PINS(E),P_SPINR(d)::B(A),XR(d)
- R(c);N_GUARD,P_PINS(E),P_SPINR(d),S_CUTB(h)::QAR(C)
- R(d);N_GUARD,P_SPINR(c),S_CUTB(h)::S(E)
- R(d);P_SPINR(c)::S(E),XP(g)
- R(d);P_SPINR(c),SBLOCK::R(F)
- B(h);S_CUTR(c)::S(E),XP(g)
- P(g);S_CUTR(c)::S(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).