MESON Chess Problem Database
Problem Display
PID: 133308 (2N5/5qQ1/B3p3/1Pkn2R1/2N3Rp/5p1K/2b5/3rB3 w - - 0 1)
Hirschenson, Aaron
Navon, Emanuel
2nd Place, Liga Problemista, 2006/1
#2
9 + 8
| 14475 | Mat Plus Review | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qh5
- 2.Qf8#
- 2.Qa7#
- 2.Qc7#
- 2.Qe7#
- 1...Qg6
- 2.Qf8#
- 2.Qa7#
- 2.Qc7#
- 2.Qe7#
- 1...Qe8
- 2.Qa7#
- 1...Qg8
- 2.Qa7#
- 2.Qc7#
- 2.Qe7#
- 1...Qf6
- 2.Qa7#
- 2.Qc7#
- 1...Qa7
- 2.Qxa7#
- 1...Qc7
- 2.Qxc7#
- 1...Qe7
- 2.Qxe7#
- 1...Qf8
- 2.Qxf8#
- 2.Qa7#
- 2.Qc7#
- 1...Ra1
- 2.Qd4#
- 1...Rb1
- 2.Qd4#
- 1...Rc1
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Bd3
- 2.Qd4#
- 1...Qh5
- Tries
- 1.Sb2?
- threat
- 2.Bb4#
- 2.Rc4#
- 2.Qc3#
- 1...Qxg7
- 2.Bb4#
- 2.Rc4#
- 1...Rxe1
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Qf4
- 2.Qa7#
- 1...Qf6
- 2.Bb4#
- 2.Rc4#
- 2.Qa7#
- 2.Qc7#
- 1...Rd2
- 2.Rc4#
- 2.Qc3#
- 1...Rd3
- 2.Bb4#
- 2.Rc4#
- 1...Rd4
- 2.Qxd4#
- 1...Bb3
- 2.Bb4#
- 1...Bd3
- 2.Sa4#
- 2.Bf2#
- 2.Bb4#
- 2.Qd4#
- 1...Be4
- 2.Qc3#
- 1...Bf5
- 2.Sa4#
- 1...e5
- 2.Rc4#
- 1...Qf5!
- threat
- 1.Sd2?
- threat
- 2.Bf2#
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Qxg7
- 2.Rc4#
- 1...Rxe1
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Rxd2
- 2.Qc3#
- 1...Be4
- 2.Qc3#
- 1...Qf5
- 2.Qd4#
- 1...Qf6
- 2.Rc4#
- 2.Qa7#
- 2.Qc7#
- 1...Bb3
- 2.Sxb3#
- 2.Bf2#
- 2.Qd4#
- 1...Bd3
- 2.Sb3#
- 2.Bf2#
- 2.Qd4#
- 1...Bf5
- 2.Sb3#
- 2.Qd4#
- 1...f2
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...e5
- 2.Rc4#
- 1...Qf4!
- threat
- 1.S4b6?
- threat
- 2.Bb4#
- 2.Rc4#
- 2.Qc3#
- 1...Qxg7
- 2.Bb4#
- 2.Rc4#
- 1...Rxe1
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Qf5
- 2.Sd7#
- 1...Qf6
- 2.Sd7#
- 2.Bb4#
- 2.Rc4#
- 2.Qc7#
- 1...Rb1
- 2.Bf2#
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Rd2
- 2.Rc4#
- 2.Qc3#
- 1...Rd3
- 2.Bb4#
- 2.Rc4#
- 1...Rd4
- 2.Qxd4#
- 1...Bb3
- 2.Bb4#
- 1...Bd3
- 2.Sa4#
- 2.Bf2#
- 2.Bb4#
- 2.Qd4#
- 1...Be4
- 2.Qc3#
- 1...Bf5
- 2.Sa4#
- 1...e5
- 2.Rc4#
- 1...Qf4!
- threat
- 1.S4d6?
- threat
- 2.Bb4#
- 2.Rc4#
- 2.Qc3#
- 1...Qxg7
- 2.Bb4#
- 2.Rc4#
- 1...Rxe1
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Qf5
- 2.Sb7#
- 1...Qf4
- 2.Qa7#
- 1...Qf6
- 2.Sb7#
- 2.Bb4#
- 2.Rc4#
- 2.Qa7#
- 2.Qc7#
- 1...Rb1
- 2.Bf2#
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Rd2
- 2.Rc4#
- 2.Qc3#
- 1...Rd3
- 2.Bb4#
- 2.Rc4#
- 1...Rd4
- 2.Qxd4#
- 1...Bb3
- 2.Bb4#
- 1...Bd3
- 2.Bf2#
- 2.Bb4#
- 2.Qd4#
- 1...Be4
- 2.Qc3#
- 1...e5
- 2.Rc4#
- 1...Bf5!
- threat
- 1.Qf8+?
- 1...Qe7
- 2.Qxe7#
- 1...Qxf8!
- 1...Qe7
- 1.Sb2?
- Keys
- 1.Sa5!
- threat
- 2.Bb4#
- 2.Rc4#
- 2.Qc3#
- 1...Qxg7
- 2.Bb4#
- 2.Rc4#
- 1...Rxe1
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Qf5
- 2.Sb7#
- 1...Qf4
- 2.Qa7#
- 1...Qf6
- 2.Sb7#
- 2.Bb4#
- 2.Rc4#
- 2.Qa7#
- 2.Qc7#
- 1...Rb1
- 2.Bf2#
- 2.Rc4#
- 2.Qc3#
- 2.Qd4#
- 1...Rd2
- 2.Rc4#
- 2.Qc3#
- 1...Rd3
- 2.Bb4#
- 2.Rc4#
- 1...Rd4
- 2.Qxd4#
- 1...Bb3
- 2.Sxb3#
- 2.Bb4#
- 1...Bd3
- 2.Sb3#
- 2.Bf2#
- 2.Bb4#
- 2.Qd4#
- 1...Be4
- 2.Qc3#
- 1...Bf5
- 2.Sb3#
- 1...e5
- 2.Rc4#
- threat
- 1.Sa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 8
- Sets
- Q(h);OGATE::QAB(H)
- Q(h);OGATE::QAB(H),XQ(h)
- Q(h);OGATE::QAR2(H),XQ(h)
- R(a);N_GUARD::QAB1(H)
- R(a);N_GUARD::QAB1(H),XR(a)
- B(b);S_CUTR(a)::QAB1(H)
- Tries
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- Q(h);OGATE::QAB(H)
- R(a);N_GUARD::QAB1(H),XR(a)
- B(b);::B(A)
- B(b);::QAR2(H)
- B(b);N_GUARD,N_SPINS(f),P_PINR(D)::S(C)
- P(g);N_SPINS(f)::R1(D)
- Refutation
- Q(h);N_SPINS(f),P_PINR(D)
- Try
- S(C);
- Threat
- DUALS(4)
- Vars
- Q(h);XQ(H)::R1(D)
- R(a);XS(C)::QAR2(H)
- B(b);::QAR2(H)
- Q(h);N_SPINS(f),P_PINR(D)::QAB1(H)
- P(g);N_SPINS(f)::R1(D)
- Refutation
- Q(h);
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- Q(h);N_GUARD,N_SPINS(f),P_PINR(D)::S(C)
- R(a);N_GUARD::QAB1(H),XR(a)
- B(b);::B(A)
- B(b);::QAR2(H)
- B(b);N_GUARD,N_SPINS(f),P_PINR(D)::S(C)
- P(g);N_SPINS(f)::R1(D)
- Refutation
- Q(h);
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- Q(h);N_GUARD,N_SPINS(f),P_PINR(D)::S(C)
- Q(h);OGATE::QAB(H)
- R(a);N_GUARD::QAB1(H),XR(a)
- B(b);::B(A)
- B(b);::QAR2(H)
- P(g);N_SPINS(f)::R1(D)
- Refutation
- B(b);N_SPINS(f),P_PINR(D)
- Try
- Q(H);CHECK
- Vars
- Q(h);N_GUARD,P_SPINQ(h)::QAB(H),XQ(h)
- Refutation
- Q(h);XQ(H)
- Try
- Actual
- S(C);
- Threat
- DUALS(3)
- Vars
- Q(h);N_GUARD,N_SPINS(f),P_PINR(D)::S(C)
- Q(h);OGATE::QAB(H)
- R(a);N_GUARD::QAB1(H),XR(a)
- B(b);::QAR2(H)
- B(b);N_GUARD,N_SPINS(f),P_PINR(D)::S(C)
- P(g);N_SPINS(f)::R1(D)
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).