MESON Chess Problem Database
Problem Display
PID: 86912 (3n1R2/5q1N/r3p3/7n/1R2rk1N/pQB4B/K3pP2/7b w - - 0 1)
Storozhenko, Ivan Ivanovich
Cherkasskaya Pravda, 1986
#2
9 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bf3
- 2.Sg6#
- 1...e5
- 2.Bd2#
- 1...Bf3
- Tries
- 1.Ba1?
- threat
- 2.Sg6#
- 2.Qe3#
- 1...Rxb4
- 2.Qe3#
- 1...Rc4
- 2.Qe3#
- 1...Rd4
- 2.Qe3#
- 1...e1Q
- 2.Sg6#
- 1...e1R
- 2.Sg6#
- 1...Sf6
- 2.Qe3#
- 2.Qg3#
- 1...e5!
- threat
- 1.Be1?
- threat
- 2.Sg6#
- 1...Rxb4
- 2.Qe3#
- 1...Rc4
- 2.Qe3#
- 1...Rd4
- 2.Qe3#
- 1...Sf6
- 2.Qg3#
- 1...e5
- 2.Bd2#
- 1...Ke5!
- threat
- 1.Bb2?
- threat
- 2.Sg6#
- 2.Qe3#
- 1...Rxb4
- 2.Qe3#
- 1...Rc4
- 2.Qe3#
- 1...Rd4
- 2.Qe3#
- 1...e1Q
- 2.Sg6#
- 1...e1R
- 2.Sg6#
- 1...Sf6
- 2.Qe3#
- 2.Qg3#
- 1...e5
- 2.Bc1#
- 1...axb2+!
- threat
- 1.Bg7?
- threat
- 2.Sg6#
- 2.Qe3#
- 1...Rxb4
- 2.Qe3#
- 1...Sxg7
- 2.Sg6#
- 2.Qg3#
- 1...Qf6
- 2.Sg6#
- 1...Rc4
- 2.Qe3#
- 1...Rd4
- 2.Qe3#
- 1...Sf6
- 2.Qg3#
- 1...e1Q
- 2.Sg6#
- 1...e1R
- 2.Sg6#
- 1...e5!
- threat
- 1.Bh8?
- threat
- 2.Sg6#
- 2.Qe3#
- 1...Rxb4
- 2.Qe3#
- 1...Qf6
- 2.Sg6#
- 1...Rc4
- 2.Qe3#
- 1...Rd4
- 2.Qe3#
- 1...Sf6
- 2.Qg3#
- 1...Sg7
- 2.Sg6#
- 2.Qg3#
- 1...e1Q
- 2.Sg6#
- 1...e1R
- 2.Sg6#
- 1...e5!
- threat
- 1.Rxe4+?
- 1...Kxe4
- 2.Qc4#
- 1...Bxe4!
- 1...Kxe4
- 1.Rxf7+?
- 1...Sf6
- 2.Rxf6#
- 1...Sxf7!
- 1...Sf6
- 1.Qd5?
- threat
- 2.Bd2#
- 2.Be5#
- 2.Qd2#
- 2.Qe5#
- 2.Qg5#
- 1...Rxb4
- 2.Sg6#
- 2.Bd2#
- 2.Be5#
- 2.Qe5#
- 1...e1Q
- 2.Be5#
- 2.Qe5#
- 2.Qg5#
- 1...e1B
- 2.Be5#
- 2.Qe5#
- 2.Qg5#
- 1...e1R
- 2.Be5#
- 2.Qe5#
- 2.Qg5#
- 1...e5
- 2.Bd2#
- 2.Bxe5#
- 1...Qf5
- 2.Bd2#
- 2.Be5#
- 2.Qd2#
- 2.Qe5#
- 1...Rc4
- 2.Sg6#
- 2.Bd2#
- 2.Be5#
- 2.Qe5#
- 1...Rd4
- 2.Sg6#
- 2.Bd2#
- 1...Ra5
- 2.Bd2#
- 2.Be5#
- 2.Qd2#
- 1...Rd6
- 2.Bd2#
- 2.Be5#
- 2.Qe5#
- 2.Qg5#
- 1...Sc6
- 2.Bd2#
- 2.Qd2#
- 2.Qg5#
- 1...exd5!
- threat
- 1.Ba1?
- Keys
- 1.Bd4!
- threat
- 2.Sg6#
- 1...Rxd4
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Re5
- 2.Be3#
- 1...Sf6
- 2.Qg3#
- 1...e5
- 2.Be3#
- threat
- 1.Bd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- B(a);SBLOCK::S(G)
- P(h);P_PINQ(C),SBLOCK::B(D)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(d);N_SPINR(d),XR(F)::QAB1(C)
- R(d);::QAB1(C)
- P(b);::S(G)
- Refutation
- P(h);P_PINQ(C)
- Try
- B(D);
- Threat
- S(G)
- Vars
- R(d);N_SPINR(d),XR(F)::QAB1(C)
- R(d);::QAB1(C)
- S(f);N_GUARD,N_SPINQ(i)::QAB1(C)
- P(h);P_PINQ(C),SBLOCK::B(D)
- Refutation
- K(e);N_SPINQ(i),N_SPINR(d),S_FLIGHT
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(d);N_SPINR(d),XR(F)::QAB1(C)
- R(d);::QAB1(C)
- P(b);::S(G)
- P(h);P_PINQ(C),SBLOCK::B(D)
- Refutation
- P(c);CHECK,XB(D)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(d);N_SPINR(d),XR(F)::QAB1(C)
- Q(i);::S(G)
- R(d);::QAB1(C)
- S(f);N_GUARD,N_SPINQ(i)::QAB1(C)
- P(b);::S(G)
- Refutation
- P(h);P_PINQ(C)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(d);N_SPINR(d),XR(F)::QAB1(C)
- Q(i);::S(G)
- R(d);::QAB1(C)
- S(f);N_GUARD,N_SPINQ(i)::QAB1(C)
- P(b);::S(G)
- Refutation
- P(h);P_PINQ(C)
- Try
- R(F);CHECK,XR(d)
- Vars
- K(e);N_SPINQ(i),P-FLIGHT,XR(F)::QAR2(C)
- Refutation
- B(a);XR(F)
- Try
- R(I);CHECK,XQ(i)
- Vars
- S(f);N_GUARD,P_SPINS(f)::R(I),XS(f)
- Refutation
- S(j);XR(I)
- Try
- Q(C);
- Threat
- DUALS(5)
- Refutation
- P(h);XQ(C)
- Try
- Actual
- B(D);N_PINR(d)
- Threat
- S(G)
- Vars
- R(d);N_GUARD,P_SPINR(d),XB(D)::QAB1(C)
- R(d);N_GUARD::QAB1(C),XR(d)
- R(d);SBLOCK::R(F)+B(D),DCHECK
- S(f);N_GUARD,N_SPINQ(i)::QAB1(C)
- P(h);P_PINQ(C),SBLOCK::B(D)
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).