MESON Chess Problem Database
Problem Display
PID: 260866 (2r2B2/p1p3p1/K5Bb/3p4/p1kpN1RR/P3p2r/1PP4Q/1N1b2q1 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
3rd HM., Neue Zurcher Zeitung, 1997
#2
11 + 13
| 6490 | yacpdb | 2022 |
| 3713 | Snap | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Qxc7#
- 1...Rb8
- 2.Qxc7#
- 1...Rd8
- 2.Qxc7#
- 1...Re8
- 2.Qxc7#
- 1...Rxf8
- 2.Qxc7#
- 1...Bxc2
- 2.Qxc2#
- 1...d3
- 2.Sed2#
- 1...dxe4
- 2.Bf7#
- 1...c5
- 2.Sd6#
- 1...Ra8
- Tries
- 1.Sf2?
- threat
- 2.Bd3#
- 2.Rxd4#
- 1...Qxg4
- 2.Bd3#
- 1...Rxh4
- 2.Bd3#
- 1...Rxf8
- 2.Qxc7#
- 1...Bxg4
- 2.Bd3#
- 1...exf2
- 2.Rxd4#
- 1...Qf1
- 2.Rxd4#
- 1...Be2
- 2.Rxd4#
- 1...Bf4
- 2.Bd3#
- 1...e2
- 2.Rxd4#
- 1...c5
- 2.Bd3#
- 1...Bxc2!
- threat
- 1.Sg3?
- threat
- 2.Bd3#
- 2.Rxd4#
- 1...Rxh4
- 2.Bd3#
- 1...Bxc2
- 2.Qxc2#
- 1...Bxg4
- 2.Bd3#
- 1...Qf1
- 2.Rxd4#
- 1...Be2
- 2.Rxd4#
- 2.Qxe2#
- 1...Bf4
- 2.Bd3#
- 1...e2
- 2.Bd3#
- 1...c5
- 2.Bd3#
- 1...Rxf8!
- threat
- 1.Sf6?
- threat
- 2.Bd3#
- 2.Rxd4#
- 1...Qxg4
- 2.Bd3#
- 1...Rxh4
- 2.Bd3#
- 1...Rxf8
- 2.Qxc7#
- 1...Bxc2
- 2.Qxc2#
- 1...Bxg4
- 2.Bd3#
- 1...Qf1
- 2.Rxd4#
- 1...Be2
- 2.Rxd4#
- 2.Qxe2#
- 1...Bf4
- 2.Bd3#
- 1...c5
- 2.Bd3#
- 1...e2!
- threat
- 1.Be8?
- threat
- 2.Bb5#
- 1...Rxe8
- 2.Qxc7#
- 1...Bxc2
- 2.Qxc2#
- 1...dxe4
- 2.Bf7#
- 1...d3
- 2.Sed2#
- 1...Rb8
- 2.Qxc7#
- 1...c6!
- threat
- 1.Qd2?
- threat
- 2.Qb4#
- 2.Qd3#
- 1...Bxc2
- 2.Qxc2#
- 1...dxe4
- 2.Bf7#
- 1...d3
- 2.Qc3#
- 2.Qb4#
- 2.Qxd3#
- 1...e2
- 2.Qb4#
- 1...Qe1
- 2.Qd3#
- 1...Qf1
- 2.Qb4#
- 1...Rb8
- 2.Qd3#
- 1...Be2
- 2.Qb4#
- 1...c5
- 2.Sd6#
- 2.Qd3#
- 1...exd2!
- threat
- 1.Qe2+?
- 1...d3
- 2.Sed2#
- 2.Qxd3#
- 1...Bxe2!
- 1...d3
- 1.Sf2?
- Keys
- 1.Sg5!
- threat
- 2.Bd3#
- 2.Rxd4#
- 1...Qxg4
- 2.Bd3#
- 1...Rxh4
- 2.Bd3#
- 1...Rxf8
- 2.Qxc7#
- 1...Bxc2
- 2.Qxc2#
- 1...Bxg4
- 2.Bd3#
- 1...e2
- 2.Sd2#
- 1...Qf1
- 2.Rxd4#
- 1...Be2
- 2.Rxd4#
- 2.Qxe2#
- 1...c5
- 2.Bd3#
- threat
- 1.Sg5!
This anticipates 273881(1997)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- R(m);N_GUARD::QAR(D),XP(k)
- R(m);N_GUARD,XB(K)::QAR(D),XP(k)
- B(a);OGATE,XP(C)::QAR2(D),XB(a)
- P(g);::R(G)+S(F),DCHECK
- P(h);OGATEB,XS(F)::B(J)
- P(k);N_GUARD,SBLOCK::S(F)
- Tries
- Try
- S(F);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINP(g),XR(G)::B(J)
- R(d);XR(H)::B(J)
- R(m);N_GUARD,XB(K)::QAR(D),XP(k)
- B(a);N_SPINP(g),XR(G)::B(J)
- P(c);XS(F)::R1(G),XP(g)
- Q(b);::R1(G),XP(g)
- B(a);::R1(G),XP(g)
- B(i);N_SPINP(g)::B(J)
- P(c);::R1(G),XP(g)
- P(k);::B(J)
- Refutation
- B(a);XP(C)
- Try
- S(F);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- R(d);XR(H)::B(J)
- B(a);OGATE,XP(C)::QAR2(D),XB(a)
- B(a);N_SPINP(g),XR(G)::B(J)
- Q(b);::R1(G),XP(g)
- B(i);N_SPINP(g)::B(J)
- P(c);::B(J)
- P(k);::B(J)
- Refutation
- R(m);XB(K)
- Try
- S(F);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINP(g),XR(G)::B(J)
- R(d);XR(H)::B(J)
- R(m);N_GUARD,XB(K)::QAR(D),XP(k)
- B(a);OGATE,XP(C)::QAR2(D),XB(a)
- B(a);N_SPINP(g),XR(G)::B(J)
- Q(b);::R1(G),XP(g)
- B(i);N_SPINP(g)::B(J)
- P(k);::B(J)
- Refutation
- P(c);
- Try
- B(J);
- Threat
- B(J)
- Vars
- R(m);N_GUARD,XB(J)::QAR(D),XP(k)
- B(a);OGATE,XP(C)::QAR2(D),XB(a)
- P(h);OGATEB,XS(F)::B(J)
- P(g);::R(G)+S(F),DCHECK
- R(m);N_GUARD::QAR(D),XP(k)
- Refutation
- P(k);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(a);OGATE,XP(C)::QAR2(D),XB(a)
- P(h);OGATEB,XS(F)::B(J)
- P(c);::QAR1(D)
- Q(b);::QAB1(D)
- Q(b);::QAR1(D)
- R(m);::QAB1(D)
- B(a);::QAR1(D)
- Refutation
- P(c);XQ(D)
- Try
- Q(D);CHECK
- Refutation
- B(a);XQ(D)
- Try
- Actual
- S(F);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINP(g),XR(G)::B(J)
- R(d);XR(H)::B(J)
- R(m);N_GUARD,XB(K)::QAR(D),XP(k)
- B(a);OGATE,XP(C)::QAR2(D),XB(a)
- B(a);N_SPINP(g),XR(G)::B(J)
- P(c);N_GUARD::S(A)
- Q(b);::R1(G),XP(g)
- P(k);::B(J)
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).