MESON Chess Problem Database
Problem Display
PID: 243807 (b2n1B2/Nn1Q3K/3b4/p6R/r1k1B3/qrP1R3/P1N5/8 w - - 0 1)
Suvorov, Ivan
Shakhmatnaya kompozitsiya, 1993
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxc3
- 2.Qb5#
- 1...Rb5
- 2.Qxb5#
- 1...Bh2
- 2.Bd5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Bg3
- 2.Bd5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Bb4
- 2.Bd5#
- 2.Qb5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Bf4
- 2.Bd5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Bc5
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Be5
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Bc7
- 2.Bd5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Be7
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Bb8
- 2.Bd5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Bxf8
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Sc6
- 2.Qe6#
- 2.Qf7#
- 1...Se6
- 2.Qxe6#
- 1...Sf7
- 2.Qe6#
- 2.Qxf7#
- 1...Rxc3
- Tries
- 1.Sxa3+?
- 1...Rbxa3
- 2.Qb5#
- 1...Bxa3
- 2.Bd5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Raxa3!
- 1...Rbxa3
- 1.Sb5?
- threat
- 2.Bd3#
- 1...Rxb5
- 2.Qxb5#
- 1...Sc5
- 2.Sxd6#
- 1...Rxc3!
- threat
- 1.Bf3?
- threat
- 2.Be2#
- 1...Rxc3
- 2.Qb5#
- 1...Sc5!
- threat
- 1.Bg7?
- threat
- 2.Bd3#
- 1...Rxc3
- 2.Qb5#
- 1...Be5
- 2.Qd5#
- 1...Sc5!
- threat
- 1.Rb5?
- threat
- 2.Bd5#
- 1...Rxb5
- 2.Qxb5#
- 1...Qc5
- 2.axb3#
- 1...Sc5!
- threat
- 1.Qxa4+?
- 1...Qb4
- 2.axb3#
- 1...Rb4
- 2.Sxa3#
- 1...Bb4
- 2.Bd5#
- 2.Qb5#
- 1...Qxa4!
- 1...Qb4
- 1.Qf5?
- threat
- 2.Qf1#
- 2.Qd5#
- 1...Rxc3
- 2.Qb5#
- 2.Qd5#
- 1...Qc1
- 2.Qd5#
- 1...Qc5
- 2.Qf1#
- 1...Rb1
- 2.Qd5#
- 1...Rb5
- 2.Qf1#
- 2.Qxb5#
- 1...Bf4
- 2.Bd5#
- 2.Qd5#
- 1...Be5
- 2.Qf1#
- 1...Sc5!
- threat
- 1.Qc6+?
- 1...Qc5
- 2.Bd5#
- 1...Bc5
- 2.Bd5#
- 2.Qd5#
- 1...Sc5
- 2.Bd5#
- 1...Sxc6!
- 1...Qc5
- 1.Qc8+?
- 1...Qc5
- 2.Bd5#
- 1...Bc5
- 2.Bd5#
- 1...Bc7
- 2.Bd5#
- 1...Sc6
- 2.Qe6#
- 1...Sc5!
- 1...Qc5
- 1.Qc7+?
- 1...Qc5
- 2.Bd5#
- 1...Bc5
- 2.Bd5#
- 1...Bxc7
- 2.Bd5#
- 1...Sc6
- 2.Qf7#
- 1...Sc5!
- 1...Qc5
- 1.Qf7+?
- 1...Se6
- 2.Qxe6#
- 2.Qf1#
- 1...Sxf7!
- 1...Se6
- 1.Qg7?
- threat
- 2.Bd3#
- 2.Qd4#
- 1...Rxc3
- 2.Qd4#
- 1...Qc5
- 2.Bd3#
- 1...Bc5
- 2.Bd3#
- 2.Bd5#
- 1...Sc5
- 2.Qd4#
- 1...Sc6
- 2.Bd3#
- 2.Qf7#
- 2.Qg8#
- 1...Se6
- 2.Bd3#
- 1...Be5!
- threat
- 1.Sxa3+?
- Keys
- 1.Qg4!
- threat
- 2.Qe2#
- 1...Rxc3
- 2.Bd3#
- 1...Sc5
- 2.Bd5#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- R(b);N_GUARD,XP(C)::QAB1(H)
- R(b);N_GUARD::QAB1(H),XR(b)
- S(i);N_GUARD::QAB(H),XS(i)
- Tries
- Try
- S(B);CHECK,XQ(a)
- Vars
- R(b);XS(B)::QAB1(H)
- Refutation
- R(c);XS(B)
- Try
- S(G);
- Threat
- B(E)
- Vars
- R(b);OGATE,XS(G)::QAB1(H),XR(b)
- S(g);N_GUARD,S_CUTQ(a)::S(G),XB(f)
- Refutation
- R(b);XP(C)
- Try
- B(E);
- Threat
- B(E)
- Vars
- R(b);N_GUARD,XP(C)::QAB1(H)
- Refutation
- S(g);
- Try
- B(J);
- Threat
- B(E)
- Vars
- R(b);N_GUARD,XP(C)::QAB1(H)
- B(f);OGATE::QAB1(H)
- Refutation
- S(g);
- Try
- R(F);
- Threat
- B(E)
- Vars
- R(b);OGATE,XR(F)::QAB1(H),XR(b)
- Q(a);N_GUARD::P(A),XR(b)
- Refutation
- S(g);
- Try
- Q(H);CHECK,XR(c)
- Vars
- Q(a);P_SPINQ(a)::P(A),XR(b)
- R(b);P_SPINR(b)::S(B),XQ(a)
- Refutation
- Q(a);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(a);::QAB1(H)
- Q(a);::QAB(H)
- R(b);::QAB1(H)
- B(f);::QAB(H)
- Refutation
- S(g);
- Try
- Q(H);CHECK
- Vars
- Q(a);P_SPINQ(a)::B(E)
- S(g);P_SPINS(g)::B(E)
- Refutation
- S(i);XQ(H)
- Try
- Q(H);CHECK
- Vars
- Q(a);P_SPINQ(a)::B(E)
- B(f);P_SPINB(f)::B(E)
- S(i);N_GUARD,P_SPINS(i)::QAB(H)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(H);CHECK
- Vars
- Q(a);P_SPINQ(a)::B(E)
- B(f);P_SPINB(f)::B(E)
- B(f);XQ(H)::B(E)
- S(i);N_GUARD,P_SPINS(i)::QAB(H)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(H);CHECK
- Refutation
- S(i);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(b);XP(C)::QAR1(H)
- Q(a);::B(E)
- S(g);::QAR1(H)
- S(i);::B(E)
- Refutation
- B(f);
- Try
- Actual
- Q(H);
- Threat
- QAB(H)
- Vars
- R(b);SBLOCK,XP(C)::QAR(H)+B(E),DCHECK
- S(g);SBLOCK::QAR(H)+B(E),DCHECK
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).