MESON Chess Problem Database
Problem Display
PID: 192968 (1n4q1/5r1b/3r4/pQp1p3/K1N5/1R6/p1P5/k3N2R w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
Schweizerische Schachzeitung, 1984
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Bxc2
- 2.Sxc2#
- 1...Bxc2
- Tries
- 1.Sg2+?
- 1...Rd1
- 2.Rxd1#
- 1...Rf1!
- 1...Rd1
- 1.Sd3+?
- 1...Rf1
- 2.Rxf1#
- 1...Qg1!
- 1...Rf1
- 1.Sf3+?
- 1...Rd1
- 2.Rxd1#
- 1...Qg1!
- 1...Rd1
- 1.Rf3?
- threat
- 2.Qb2#
- 1...Bxc2+
- 2.Sxc2#
- 1...Qe8
- 2.Sd3#
- 1...Rb6
- 2.Sg2#
- 1...Rb7!
- threat
- 1.Rg3?
- threat
- 2.Qb2#
- 1...Bxc2+
- 2.Sxc2#
- 1...Rb6
- 2.Sf3#
- 1...Rb7
- 2.Sd3#
- 1...Qe8!
- threat
- 1.Sg2+?
- Keys
- 1.Rd3!
- threat
- 2.Qb2#
- 1...Qe8
- 2.Sf3#
- 1...Rb6
- 2.Rd1#
- 1...Rb7
- 2.Sg2#
- threat
- 1.Rd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- B(h);P_PINR(D),XP(C)::R(B)+S(A),DCHECK,XB(h)
- Tries
- Try
- S(A);CHECK
- Vars
- R(f);N_GUARD,P_SPINR(f)::R(B),XR(f)
- Refutation
- R(g);P_SPINR(g)
- Try
- S(A);CHECK
- Vars
- R(g);N_GUARD,P_SPINR(g)::R(B),XR(g)
- Refutation
- Q(j);P_SPINQ(j)
- Try
- S(A);CHECK
- Vars
- R(f);N_GUARD,P_SPINR(f)::R(B),XR(f)
- Refutation
- Q(j);P_SPINQ(j)
- Try
- R(D);
- Threat
- QAB1(G)
- Vars
- B(h);CHECK,XP(C)::R(B)+S(A),DCHECK,XB(h)
- Q(j);N_GUARD,P_PINQ(G)::R(B)+S(A)
- R(f);N_GUARD::R(B)+S(A)
- Refutation
- R(g);
- Try
- R(D);
- Threat
- QAB1(G)
- Vars
- B(h);CHECK,XP(C)::R(B)+S(A),DCHECK,XB(h)
- R(f);N_GUARD::R(B)+S(A)
- R(g);N_GUARD::R(B)+S(A)
- Refutation
- Q(j);P_PINQ(G)
- Try
- Actual
- R(D);
- Threat
- QAB1(G)
- Vars
- Q(j);N_GUARD,P_PINQ(G)::R(B)+S(A)
- R(f);N_GUARD::R(D)
- R(g);N_GUARD::R(B)+S(A)
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).