MESON Chess Problem Database
Problem Display
PID: 7754 (3bb1q1/1KB2N2/B1p3r1/2kp3R/p1N1Rp2/Ppn3r1/8/Q3n3 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
2nd Comm., Phenix, 1993
#2
9 + 13
SOLUTION
- SOUND
- Sets
- 1...Rg4
- 2.Bd6#
- 1...Rg5
- 2.Bd6#
- 1...Rd6
- 2.Bxd6#
- 1...Rg7
- 2.Bd6#
- 1...Bh4
- 2.Bb6#
- 1...Bg5
- 2.Bb6#
- 1...Bf6
- 2.Bb6#
- 2.Bd6#
- 1...Be7
- 2.Bb6#
- 1...Sb1
- 2.Qd4#
- 1...Sd1
- 2.Qd4#
- 1...Sa2
- 2.Qd4#
- 1...Rg4
- Tries
- 1.Sb2?
- threat
- 2.Rc4#
- 1...Sxe4
- 2.Sxa4#
- 1...R6g5
- 2.Bd6#
- 1...Bg5
- 2.Bb6#
- 1...R3g5!
- threat
- 1.Se3?
- threat
- 2.Rc4#
- 2.Qxc3#
- 1...Rxe3
- 2.Rc4#
- 1...Qg7
- 2.Rc4#
- 1...Qh8
- 2.Rc4#
- 1...R3g5
- 2.Qxc3#
- 1...R6g5
- 2.Bd6#
- 2.Qxc3#
- 1...Bg5
- 2.Bb6#
- 2.Qxc3#
- 1...Bf6
- 2.Bb6#
- 2.Bd6#
- 2.Rc4#
- 1...Sb1
- 2.Rc4#
- 2.Qd4#
- 1...Sd1
- 2.Rc4#
- 2.Qd4#
- 1...Sa2
- 2.Rc4#
- 2.Qd4#
- 1...Se2
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...b2
- 2.Rc4#
- 1...Sxe4!
- threat
- 1.Sa5?
- threat
- 2.Rc4#
- 1...R3g5
- 2.Qxc3#
- 1...R6g5
- 2.Bd6#
- 1...Bg5
- 2.Bb6#
- 1...Sxe4!
- threat
- 1.Sb6?
- threat
- 2.Rc4#
- 1...Sxe4
- 2.Sxa4#
- 1...R3g5
- 2.Qxc3#
- 1...R6g5
- 2.Bd6#
- 1...Bg5!
- threat
- 1.Scd6?
- threat
- 2.Rc4#
- 1...Sxe4
- 2.Sxe4#
- 1...R3g5
- 2.Qxc3#
- 1...Bg5
- 2.Bb6#
- 1...R6g5!
- threat
- 1.Qxc3?
- threat
- 2.Se3#
- 2.Qb4#
- 2.Qd4#
- 2.Qa5#
- 1...Bxc7
- 2.Se3#
- 2.Qb4#
- 2.Qd4#
- 1...Qg7
- 2.Qb4#
- 2.Qa5#
- 1...Qh8
- 2.Qb4#
- 2.Qa5#
- 1...Rd3
- 2.Qb4#
- 2.Qa5#
- 1...Re3
- 2.Sxe3#
- 2.Qb4#
- 2.Qd4#
- 2.Qa5#
- 1...Bf6
- 2.Bb6#
- 2.Bd6#
- 2.Qb4#
- 2.Qa5#
- 1...Sc2
- 2.Se3#
- 2.Qa5#
- 1...Sd3
- 2.Sb2#
- 2.Sd2#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sb6#
- 2.Scd6#
- 2.Qd4#
- 2.Qa5#
- 1...Sf3
- 2.Sb2#
- 2.Sd2#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sb6#
- 2.Scd6#
- 2.Qb4#
- 2.Qa5#
- 1...Rxc3!
- threat
- 1.Sb2?
- Keys
- 1.Sd2!
- threat
- 2.Rc4#
- 1...Sxe4
- 2.Sxe4#
- 1...R3g5
- 2.Qxc3#
- 1...R6g5
- 2.Bd6#
- 1...Bg5
- 2.Bb6#
- threat
- 1.Sd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(j);N_GUARD::B(H)
- R(j);N_GUARD,N_SPINP(h)::B(H)
- R(j);N_GUARD::B(H),XR(j)
- B(k);N_GUARD::B(H)
- B(k);N_GUARD,N_SPINP(h)::B(H)
- S(c);OGATE::QAB1(A)
- Tries
- Try
- S(C);
- Threat
- R1(D)
- Vars
- S(c);N_GUARD,XR(D)::S(C),XP(e)
- R(j);N_GUARD,N_SPINP(h)::B(H)
- B(k);N_GUARD,N_SPINP(h)::B(H)
- Refutation
- R(d);N_SPINP(h)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(d);XS(C)::R1(D)
- Q(m);::R1(D)
- R(d);N_SPINP(h)::QAR2(A),XS(c)
- S(c);::R1(D)
- P(b);::R1(D)
- Refutation
- S(c);XR(D)
- Try
- S(C);
- Threat
- R1(D)
- Vars
- R(d);N_GUARD,N_SPINP(h)::QAR2(A),XS(c)
- R(j);N_GUARD,N_SPINP(h)::B(H)
- B(k);N_GUARD,N_SPINP(h)::B(H)
- Refutation
- S(c);XR(D)
- Try
- S(C);
- Threat
- R1(D)
- Vars
- S(c);N_GUARD,XR(D)::S(C),XP(e)
- R(d);N_GUARD,N_SPINP(h)::QAR2(A),XS(c)
- R(j);N_GUARD,N_SPINP(h)::B(H)
- Refutation
- B(k);N_SPINP(h)
- Try
- S(C);
- Threat
- R1(D)
- Vars
- S(c);XR(D)::S(C),XS(c)
- R(d);N_GUARD,N_SPINP(h)::QAR2(A),XS(c)
- B(k);N_GUARD,N_SPINP(h)::B(H)
- Refutation
- R(j);N_SPINP(h)
- Try
- Q(A);XS(c)
- Threat
- DUALS(4)
- Refutation
- R(d);XQ(A)
- Try
- Actual
- S(C);
- Threat
- R1(D)
- Vars
- S(c);XR(D)::S(C),XS(c)
- R(d);N_GUARD,N_SPINP(h)::QAR2(A),XS(c)
- R(j);N_GUARD,N_SPINP(h)::B(H)
- B(k);N_GUARD,N_SPINP(h)::B(H)
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).