MESON Chess Problem Database
Problem Display
PID: 57392 (1rR5/p1bn4/3P4/5Q2/RPp1p2q/2kPB1N1/2pr1p2/K1N5 w - - 0 1)
Kovacevic, Marjan
Shanshin, Valery Yurevich
Zhuravlev, Andrey Nikolaevich
2nd Prize, The Problemist, 2005/I
#2
10 + 11
| 56 | The Problemist | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qg5
- 2.Sxe4#
- 1...Qf6
- 2.Sxe4#
- 1...Qd8
- 2.Sxe4#
- 1...Qh2
- 2.Sxe4#
- 1...Qh3
- 2.Sxe4#
- 1...Qh5
- 2.Sxe4#
- 1...Qh6
- 2.Sxe4#
- 1...Qh7
- 2.Sxe4#
- 1...Qh8
- 2.Sxe4#
- 1...Rd1
- 2.Se2#
- 1...Re2
- 2.Sgxe2#
- 1...Rxd3
- 2.Sge2#
- 1...Ba5
- 2.Rxc4#
- 1...Bb6
- 2.Rxc4#
- 1...Bxd6
- 2.Rxc4#
- 1...Bd8
- 2.Rxc4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sf6
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Qg5
- Tries
- 1.Bxd2+?
- 1...Kd4
- 2.Sge2#
- 1...Kxd2!
- 1...Kd4
- 1.Qa5?
- threat
- 2.Ra3#
- 1...Bxa5
- 2.Rxc4#
- 1...cxd3
- 2.b5#
- 1...Sc5!
- threat
- 1.Qb5?
- threat
- 2.Ra3#
- 2.Qxc4#
- 1...Rxd3
- 2.Sge2#
- 2.Ra3#
- 1...cxd3
- 2.Ra3#
- 1...exd3
- 2.Ra3#
- 1...Sc5
- 2.Qxc4#
- 1...Se5
- 2.Ra3#
- 2.Qxe5#
- 1...Sb6
- 2.Ra3#
- 2.Qe5#
- 1...Rxb5!
- threat
- 1.Qc5?
- threat
- 2.Bd4#
- 2.Ra3#
- 2.Qd4#
- 2.Qxc4#
- 1...Rxd3
- 2.Sge2#
- 2.Ra3#
- 1...Rxb4
- 2.Bd4#
- 2.Qxb4#
- 2.Qd4#
- 1...exd3
- 2.Ra3#
- 1...Qf6
- 2.Sxe4#
- 2.Ra3#
- 2.Qxc4#
- 1...Qh8
- 2.Sxe4#
- 2.Ra3#
- 2.Qxc4#
- 1...Rd1
- 2.Se2#
- 2.Ra3#
- 2.Qd4#
- 2.Qxc4#
- 1...Re2
- 2.Sgxe2#
- 2.Ra3#
- 2.Qd4#
- 2.Qxc4#
- 1...Bb6
- 2.Bd4#
- 2.Ra3#
- 2.Qxc4#
- 1...Se5
- 2.Bd4#
- 2.Ra3#
- 2.Qd4#
- 2.Qxe5#
- 1...Sb6
- 2.Bd4#
- 2.Ra3#
- 2.Qd4#
- 2.Qe5#
- 1...Sxc5!
- threat
- 1.Qd5?
- threat
- 2.Bd4#
- 2.Qxc4#
- 2.Qd4#
- 1...Rxd3
- 2.Sge2#
- 1...Rxb4
- 2.Bd4#
- 2.Qd4#
- 1...cxd3
- 2.Sa2#
- 2.Bd4#
- 2.Qb3#
- 2.Qd4#
- 1...Qf6
- 2.Sxe4#
- 2.Qxc4#
- 1...Qh8
- 2.Sxe4#
- 2.Qxc4#
- 1...Rd1
- 2.Se2#
- 2.Qxc4#
- 2.Qd4#
- 1...Re2
- 2.Sgxe2#
- 2.Qxc4#
- 2.Qd4#
- 1...Bb6
- 2.Rxc4#
- 2.Qxc4#
- 1...Se5
- 2.Bd4#
- 2.Qd4#
- 2.Qxe5#
- 1...Sb6
- 2.Bd4#
- 2.Qd4#
- 2.Qe5#
- 1...exd3!
- threat
- 1.Qf6+?
- 1...Qxf6
- 2.Sxe4#
- 1...Se5
- 2.Qxe5#
- 1...Sxf6!
- 1...Qxf6
- 1.b5?
- threat
- 2.Rxc4#
- 1...Rxd3
- 2.Sge2#
- 1...cxd3
- 2.Bd4#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...exd3!
- threat
- 1.Bxd2+?
- Keys
- 1.Qxe4!
- threat
- 2.Bd4#
- 1...Qxe4
- 2.Sxe4#
- 1...Rxd3
- 2.Sge2#
- 1...cxd3
- 2.Ra3#
- 1...Qf6
- 2.Qxc4#
- 1...Qh8
- 2.Qxc4#
- 1...Rd1
- 2.Se2#
- 1...Re2
- 2.Sgxe2#
- 1...Bb6
- 2.Rxc4#
- threat
- 1.Qxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 15
- Sets
- Q(g);N_GUARD::S(E),XP(f)
- R(b);N_GUARD,P_PINS(B)::S(E)
- R(b);N_GUARD::S(E),XR(b)
- R(b);N_GUARD,XP(C)::S(E)
- B(i);OGATE,P_SPINP(e)::R1(J),XP(e)
- B(i);OGATE,P_SPINP(e),XP(I)::R1(J),XP(e)
- S(j);N_GUARD::QAB(H)
- S(j);N_GUARD::QAB(H),XS(j)
- Tries
- Try
- B(D);CHECK,XR(b)
- Vars
- K(d);S_FLIGHT::S(E)
- Refutation
- K(d);S_FLIGHT,XB(D)
- Try
- Q(H);
- Threat
- R(F)
- Vars
- B(i);OGATE,P_SPINP(e),XQ(H)::R1(J),XP(e)
- P(e);P_SPINB(i),XP(C)::QAB(H)+P(G)
- Refutation
- S(j);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- P(e);P_SPINB(i),XP(C)::R(F)
- P(f);XP(C)::R(F)
- S(j);::QAR1(H),XP(e)
- Refutation
- R(k);XQ(H)
- Try
- Q(H);P_PINP(e)
- Threat
- DUALS(4)
- Vars
- P(f);XP(C)::R(F)
- Refutation
- S(j);N_SPINP(e),XQ(H)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- R(b);N_GUARD,XP(C)::S(E)
- Refutation
- P(f);XP(C)
- Try
- Q(H);CHECK
- Vars
- Q(g);XQ(H)::S(E),XP(f)
- S(j);N_GUARD,P_SPINS(j)::QAB(H),XS(j)
- Refutation
- S(j);XQ(H)
- Try
- P(G);
- Threat
- R1(F),XP(e)
- Vars
- R(b);N_GUARD,XP(C)::S(E)
- P(e);P_SPINB(i),XP(C)::B(D)
- S(j);N_GUARD::QAB(H),XS(j)
- S(j);N_GUARD::QAB(H)
- Refutation
- P(f);XP(C)
- Try
- Actual
- Q(H);XP(f)
- Threat
- B(D)
- Vars
- Q(g);XQ(H)::S(E),XQ(g)
- R(b);N_GUARD,XP(C)::S(E)
- P(e);P_SPINB(i),XP(C)::R(F)
- Q(g);N_GUARD::QAR1(H),XP(e)
- R(b);N_GUARD,P_PINS(B)::S(E)
- R(b);N_GUARD::S(E),XR(b)
- B(i);OGATE,P_SPINP(e)::R1(J),XP(e)
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).