MESON Chess Problem Database
Problem Display
PID: 162694 (7K/3p1QP1/B2p1B2/2nR2p1/2q1k1P1/r1P1p1RN/1nbp3p/4r1N1 w - - 0 1)
Storozhenko, Ivan Ivanovich
1st Prize, Zadachi i Etyudi, 2014
#2
11 + 13
| 145 | StrateGems | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Rd4#
- 1...Qa2
- 2.Rd4#
- 1...Qe2
- 2.Rd4#
- 1...Qb3
- 2.Rd4#
- 1...Qb5
- 2.Rd4#
- 1...Qxa6
- 2.Rd4#
- 1...Qd4
- 2.Rxd4#
- 1...Qf1
- Tries
- 1.Sf2+?
- 1...Kf4
- 2.Be5#
- 2.Rf3#
- 1...exf2!
- 1...Kf4
- 1.Bxc4?
- threat
- 2.Rd4#
- 2.Qg6#
- 1...Sxc4
- 2.Rd4#
- 1...d1Q
- 2.Qg6#
- 1...d1R
- 2.Qg6#
- 1...Rf1
- 2.Rd4#
- 1...Sb3
- 2.Qg6#
- 2.Qe8#
- 2.Qe7#
- 1...Se6
- 2.Qg6#
- 1...Ra8+!
- threat
- 1.Be5?
- threat
- 2.Sxg5#
- 2.Qf3#
- 1...Qxd5
- 2.Qf5#
- 1...hxg1S
- 2.Sxg5#
- 1...Se6
- 2.Qf3#
- 1...d1Q
- 2.Sxg5#
- 1...d1B
- 2.Sxg5#
- 1...h1B
- 2.Sxg5#
- 1...h1R
- 2.Qf3#
- 1...Qf1
- 2.Sxg5#
- 1...Qe2
- 2.Sxg5#
- 1...Rf1
- 2.Sxg5#
- 1...Bd1
- 2.Sxg5#
- 1...h1Q!
- threat
- 1.Bxg5?
- threat
- 2.Qf3#
- 2.Qf5#
- 1...Qxd5
- 2.Qf4#
- 1...hxg1S
- 2.Qf5#
- 1...d1Q
- 2.Qf5#
- 1...d1B
- 2.Qf5#
- 1...h1Q
- 2.Qf5#
- 1...h1B
- 2.Qf5#
- 1...Qe2
- 2.Qf5#
- 1...Rf1
- 2.Rxe3#
- 1...Bd1
- 2.Qf5#
- 1...Qf1!
- threat
- 1.Be7?
- threat
- 2.Sxg5#
- 2.Qf3#
- 2.Qf5#
- 1...hxg1S
- 2.Sxg5#
- 2.Qf5#
- 1...Se6
- 2.Qf3#
- 2.Qf5#
- 1...d1Q
- 2.Sxg5#
- 2.Qf5#
- 1...d1B
- 2.Sxg5#
- 2.Qf5#
- 1...h1Q
- 2.Qf5#
- 1...h1B
- 2.Sxg5#
- 2.Qf5#
- 1...h1R
- 2.Qf3#
- 2.Qf5#
- 1...Qf1
- 2.Sxg5#
- 1...Qe2
- 2.Sxg5#
- 2.Qf5#
- 1...Rf1
- 2.Sxg5#
- 1...Bd1
- 2.Sxg5#
- 2.Qf5#
- 1...Qxd5!
- threat
- 1.Bd8?
- threat
- 2.Sxg5#
- 2.Qf3#
- 2.Qf5#
- 1...hxg1S
- 2.Sxg5#
- 2.Qf5#
- 1...Se6
- 2.Qf3#
- 2.Qf5#
- 1...d1Q
- 2.Sxg5#
- 2.Qf5#
- 1...d1B
- 2.Sxg5#
- 2.Qf5#
- 1...h1Q
- 2.Qf5#
- 1...h1B
- 2.Sxg5#
- 2.Qf5#
- 1...h1R
- 2.Qf3#
- 2.Qf5#
- 1...Qf1
- 2.Sxg5#
- 1...Qe2
- 2.Sxg5#
- 2.Qf5#
- 1...Rf1
- 2.Sxg5#
- 1...Bd1
- 2.Sxg5#
- 2.Qf5#
- 1...Qxd5!
- threat
- 1.Rxd6?
- threat
- 2.Qg6#
- 1...Qxf7
- 2.Rd4#
- 1...Qf1
- 2.Rd4#
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Qe6
- 2.Rd4#
- 1...Rf1!
- threat
- 1.Sf2+?
- Keys
- 1.Bd4!
- threat
- 2.Qf5#
- 1...Kd3
- 2.Sf2#
- 1...Qxd5
- 2.Qf3#
- 1...Qf1
- 2.Sxg5#
- 1...Rf1
- 2.Rxe3#
- threat
- 1.Bd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(h);N_GUARD::R1(F)
- Q(h);N_GUARD,XB(G)::R1(F)
- Q(h);N_GUARD::R1(F),XQ(h)
- Tries
- Try
- S(D);CHECK
- Refutation
- P(g);XS(D)
- Try
- B(G);XQ(h)
- Threat
- DUALS(2)
- Vars
- S(b);XB(G)::R1(F)
- P(d);::QAB(I)
- R(a);::R1(F)
- S(j);::QAB(I)
- Refutation
- R(f);CHECK
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(h);SBLOCK,XR(F)::QAB1(I)
- P(e);XS(A)::S(D),XP(k)
- S(j);::QAB1(I)
- P(d);::S(D),XP(k)
- P(e);::S(D),XP(k)
- P(e);P_PINS(D)::QAB1(I)
- Q(h);::S(D),XP(k)
- R(a);::S(D),XP(k)
- B(c);::S(D),XP(k)
- Refutation
- P(e);P_PINS(D)
- Try
- B(H);XP(k)
- Threat
- DUALS(2)
- Vars
- Q(h);SBLOCK,XR(F)::QAR1(I)
- P(e);XS(A)::QAB1(I)
- P(d);::QAB1(I)
- P(e);P_PINS(D)::QAB1(I)
- P(e);::QAB1(I)
- Q(h);::QAB1(I)
- R(a);N_GUARD::R1(C),XP(g)
- B(c);::QAB1(I)
- Refutation
- Q(h);
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- P(e);P_PINS(D)::QAB1(I)
- Q(h);::S(D),XP(k)
- R(a);::S(D),XP(k)
- Refutation
- Q(h);XR(F)
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- P(e);P_PINS(D)::QAB1(I)
- Q(h);::S(D),XP(k)
- R(a);::S(D),XP(k)
- Refutation
- Q(h);XR(F)
- Try
- R(F);XP(l)
- Threat
- QAB(I)
- Vars
- Q(h);N_GUARD,XQ(I)::R1(F)
- Q(h);N_GUARD::QAB1(I),XQ(h)
- Q(h);N_GUARD::R1(F)
- Refutation
- R(a);
- Try
- Actual
- B(H);
- Threat
- QAB1(I)
- Vars
- K(i);P_SPINP(g),P_SPINQ(h),S_FLIGHT::S(D)
- Q(h);SBLOCK,XR(F)::QAB1(I)
- Q(h);::S(D),XP(k)
- R(a);N_GUARD::R1(C),XP(g)
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).