MESON Chess Problem Database
Problem Display
PID: 271829 (2N4B/8/8/3pp3/K1k5/1p5r/3QN3/8 w - - 0 1)
Chernyavsky, Mykola Vasilovich
Yakimovich, Daniil
Sachmatija, 2023
#2
5 + 5
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qc3#
- 1...Rh2
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 1...Rd3
- 2.Qb4#
- 1...Rh4
- 2.Qc3#
- 1...Rh5
- 2.Qc3#
- 1...Rh6
- 2.Qc3#
- 1...Rh7
- 2.Qc3#
- 1...Rxh8
- 2.Qc3#
- 1...e4
- 2.Qd4#
- 1...Rh1
- Tries
- 1.Se7?
- threat
- 2.Qxd5#
- 1...Kc5
- 2.Qb4#
- 1...Rd3
- 2.Qb4#
- 1...d4!
- threat
- 1.Bxe5?
- threat
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 1...Rd3
- 2.Qb4#
- 1...Rh4
- 2.Qc3#
- 1...Kc5!
- threat
- 1.Qc1+?
- 1...Rc3
- 2.Qxc3#
- 1...Kd3!
- 1...Rc3
- 1.Qc2+?
- 1...Rc3
- 2.Qxc3#
- 1...bxc2!
- 1...Rc3
- 1.Se7?
- Keys
- 1.Sf4!
- threat
- 2.Qb4#
- 1...Kc5
- 2.Qxd5#
- 1...exf4
- 2.Qd4#
- 1...Rc3
- 2.Qxd5#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- R(b);N_GUARD::QAR1(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- R(b);SBLOCK::QAR1(A)
- R(b);N_GUARD,XB(E)::QAR1(A)
- P(e);N_GUARD::QAR1(A)
- Tries
- Try
- S(D);
- Threat
- QAB1(A),XP(d)
- Vars
- K(c);N_GUARD,P-FLIGHT::QAB1(A)
- R(b);SBLOCK::QAR1(A)
- Refutation
- P(d);
- Try
- B(E);XP(e)
- Threat
- QAR1(A)
- Vars
- P(d);::QAR1(A),XP(d)
- R(b);SBLOCK::QAR1(A)
- R(b);N_GUARD::QAR1(A)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(A);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAR1(A),XR(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAR1(A),XR(b)
- Refutation
- P(a);XQ(A)
- Try
- Actual
- S(B);
- Threat
- QAR1(A)
- Vars
- K(c);N_GUARD,P-FLIGHT::QAR1(A),XP(d)
- P(e);N_GUARD,XS(B)::QAR1(A)
- R(b);SBLOCK::QAB1(A),XP(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).