MESON Chess Problem Database
Problem Display
PID: 197678 (2N1Q1K1/5B2/8/2kN4/2r1P1p1/Pq3b2/2R2Rr1/b5B1 w - - 0 1)
Paalanen, Erkki
Suomen Shakki, 1986
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Rfd2#
- 1...Rxc2
- 2.Rxc2#
- 1...Kd4
- Tries
- 1.Sf4?
- threat
- 2.Se6#
- 1...Kd4
- 2.Rfd2#
- 1...Qxa3
- 2.Rxc4#
- 1...Rxc2
- 2.Rxc2#
- 1...Qb6
- 2.Rxc4#
- 1...Rc3
- 2.Rxg2#
- 1...Bxe4!
- threat
- 1.Qe7+?
- 1...Kd4
- 2.Rfd2#
- 1...Kc6
- 2.Sa7#
- 2.Be8#
- 1...Kb5!
- 1...Kd4
- 1.Sf4?
- Keys
- 1.Sc7!
- threat
- 2.Se6#
- 1...Kd4
- 2.Rfd2#
- 1...Qxa3
- 2.Rxc4#
- 1...Rxc2
- 2.Rxc2#
- 1...Bxe4
- 2.Rf5#
- 1...Qb6
- 2.Rxc4#
- 1...Rc3
- 2.Rxg2#
- threat
- 1.Sc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- K(g);N_SPINR(e),S_FLIGHT::B(A)+R(C),DCHECK
- R(e);N_SPINR(e),OGATE,XR(B)::B(A)+R(C),DCHECK,XR(e)
- Tries
- Try
- S(F);
- Threat
- S(F)
- Vars
- K(g);N_SPINR(e),S_FLIGHT::B(A)+R(C),DCHECK
- Q(c);N_GUARD,XP(D)::R1(B),XR(e)
- R(e);N_SPINR(e),OGATE,P_PINB(G),XR(B)::B(A)+R(C),DCHECK,XR(e)
- Q(c);N_GUARD::R1(B),XR(e)
- R(e);P_PINB(G),S_CUTB(a),S_CUTQ(c)::B(A)+R(C),XR(b)
- Refutation
- B(d);XP(E)
- Try
- Q(I);CHECK
- Vars
- K(g);N_SPINR(e),S_FLIGHT::B(A)+R(C),DCHECK
- Refutation
- K(g);N_SPINR(e),P-FLIGHT
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- K(g);N_SPINR(e),S_FLIGHT::B(A)+R(C),DCHECK
- Q(c);N_GUARD,XP(D)::R1(B),XR(e)
- R(e);N_SPINR(e),OGATE,P_PINB(G),XR(B)::B(A)+R(C),DCHECK,XR(e)
- B(d);OGATE,XP(E)::B(A)+R(C),DCHECK
- Q(c);N_GUARD::R1(B),XR(e)
- R(e);P_PINB(G),S_CUTB(a),S_CUTQ(c)::B(A)+R(C),XR(b)
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).