MESON Chess Problem Database
Problem Display
PID: 23956 (3nr1b1/pp5q/6p1/Q6p/2Bk1B2/1r6/2R1pN2/1n2K3 w - - 0 1)
Gamza, Grigory Stepanovich
2nd Comm., Wertheim MT, 1997
#2
6 + 12
| 5454 | Near Snap | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Qxe5#
- 1...Re6
- 2.Qd5#
- 1...Rf8
- 2.Qe5#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Qe5#
- 1...Se6
- 2.Qd5#
- 2.Qe5#
- 1...Sf7
- 2.Qd5#
- 1...Re5
- Tries
- 1.Be6?
- threat
- 2.Rc4#
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rxe6
- 2.Qc5#
- 1...Bxe6
- 2.Qc5#
- 2.Qe5#
- 1...Sxe6
- 2.Qe5#
- 1...Qc7
- 2.Qd5#
- 1...Qd7
- 2.Rc4#
- 2.Qc5#
- 2.Qe5#
- 1...Qe7
- 2.Rc4#
- 2.Qd5#
- 2.Qe5#
- 1...Qg7
- 2.Rc4#
- 2.Qc5#
- 2.Qd5#
- 1...Qh8
- 2.Rc4#
- 2.Qc5#
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 2.Qe5#
- 1...Re3
- 2.Rc4#
- 2.Qb4#
- 2.Qa4#
- 2.Qc5#
- 2.Qd5#
- 1...Rb4
- 2.Qxb4#
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rb5
- 2.Rc4#
- 1...Sd2
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Sa3
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Sc3
- 2.Rd2#
- 2.Qe5#
- 1...Sc6
- 2.Rc4#
- 2.Qc5#
- 2.Qd5#
- 1...Sf7
- 2.Rc4#
- 2.Qc5#
- 2.Qd5#
- 1...b6
- 2.Rc4#
- 2.Qd5#
- 2.Qe5#
- 1...b5!
- threat
- 1.Bxg8?
- threat
- 2.Rc4#
- 2.Qc5#
- 2.Qd5#
- 1...Qxg8
- 2.Qc5#
- 1...Rxg8
- 2.Qc5#
- 2.Qe5#
- 1...Qc7
- 2.Qd5#
- 1...Qd7
- 2.Rc4#
- 2.Qc5#
- 1...Qe7
- 2.Rc4#
- 2.Qd5#
- 1...Qf7
- 2.Qc5#
- 1...Rc3
- 2.Qd5#
- 1...Rb4
- 2.Qxb4#
- 2.Qc5#
- 2.Qd5#
- 1...Rb5
- 2.Rc4#
- 1...Re5
- 2.Rc4#
- 2.Qxe5#
- 1...Re6
- 2.Qc5#
- 1...Sd2
- 2.Qc5#
- 2.Qd5#
- 1...Sa3
- 2.Qc5#
- 2.Qd5#
- 1...Sc3
- 2.Rd2#
- 1...Se6
- 2.Qe5#
- 1...Sf7
- 2.Qc5#
- 1...b6
- 2.Rc4#
- 2.Qd5#
- 1...b5!
- threat
- 1.Qxa7+?
- 1...Rb6
- 2.Qxb6#
- 1...b6!
- 1...Rb6
- 1.Be6?
- Keys
- 1.Bf7!
- threat
- 2.Rc4#
- 2.Qc5#
- 2.Qd5#
- 1...Qxf7
- 2.Qc5#
- 1...Bxf7
- 2.Qc5#
- 1...Sxf7
- 2.Qc5#
- 1...Rc3
- 2.Qd5#
- 1...Rb4
- 2.Qxb4#
- 2.Qc5#
- 2.Qd5#
- 1...Rb5
- 2.Rc4#
- 1...Re5
- 2.Rc4#
- 2.Qxe5#
- 1...Re6
- 2.Qc5#
- 1...Sd2
- 2.Qc5#
- 2.Qd5#
- 1...Sa3
- 2.Qc5#
- 2.Qd5#
- 1...Sc3
- 2.Rd2#
- 1...Se6
- 2.Qe5#
- 1...b5
- 2.Qxa7#
- 1...b6
- 2.Rc4#
- 2.Qd5#
- threat
- 1.Bf7!
Anticipated by 109465(1963)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 7
- REMOVED MATES = 4
- Sets
- R(k);N_GUARD::QAB1(F),XR(k)
- R(k);S_CUTB(l)::QAR1(F)
- R(k);N_GUARD::QAB1(F)
- B(l);N_GUARD::QAR1(F),XB(l)
- B(l);S_CUTR(k)::QAB1(F)
- S(j);S_CUTB(l)::QAR1(F)
- Tries
- Try
- B(D);
- Threat
- DUALS(4)
- Vars
- R(k);XB(D)::QAB1(F)
- S(j);XB(D)::QAB1(F)
- Q(i);::QAR1(F)
- R(c);::R1(B)
- Refutation
- P(h);
- Try
- B(D);XB(l)
- Threat
- DUALS(3)
- Vars
- Q(i);XB(D)::QAB1(F)
- Q(i);::QAR1(F)
- Q(i);::QAB1(F)
- R(c);::QAR1(F)
- R(c);::R1(B)
- R(k);::QAB1(F)
- S(a);N_GUARD,S_CUTR(c)::R(B)
- S(j);S_CUTR(k)::QAB1(F)
- S(j);::QAB1(F)
- Refutation
- P(h);
- Try
- Q(F);CHECK,XP(g)
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAB(F),XR(c)
- Refutation
- P(h);P_SPINP(h)
- Try
- Actual
- B(D);
- Threat
- DUALS(3)
- Vars
- Q(i);XB(D)::QAB1(F)
- B(l);XB(D)::QAB1(F)
- S(j);XB(D)::QAB1(F)
- R(c);::QAR1(F)
- R(c);::R1(B)
- R(k);::QAB1(F)
- S(a);N_GUARD,S_CUTR(c)::R(B)
- S(j);S_CUTR(k)::QAB1(F)
- P(h);N_GUARD,S_CUTR(c)::QAB(F),XP(g)
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).