MESON Chess Problem Database
Problem Display
PID: 249330 (1R1Rb2q/K1B1p3/2p5/2k1NQ2/8/8/n3B3/2r1n1b1 w - - 0 1)
Krizhanivsky, Vasil Viktorovich
Uralski Problemist, 2000
#2
7 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Qxe5#
- 1...Rc4
- 2.Sd3#
- 1...Bf2
- 2.Qxf2#
- 1...Bh2
- 2.Qf2#
- 1...Bd4
- 2.Sd7#
- 1...Sb4
- 2.Bb6#
- 1...Qxe5
- Tries
- 1.Sf3+?
- 1...Qe5
- 2.Qxe5#
- 1...e5!
- 1...Qe5
- 1.Sc4+?
- 1...Qe5
- 2.Qxe5#
- 1...e5!
- 1...Qe5
- 1.Sg4+?
- 1...Qe5
- 2.Qxe5#
- 1...e5!
- 1...Qe5
- 1.Sg6+?
- 1...Qe5
- 2.Qxe5#
- 1...e5!
- 1...Qe5
- 1.Sf7+?
- 1...Qe5
- 2.Qxe5#
- 1...e5!
- 1...Qe5
- 1.Ba6?
- threat
- 2.Sd3#
- 1...Qxe5
- 2.Qxe5#
- 1...Sd3
- 2.Sxd3#
- 1...Bd7!
- threat
- 1.Rd2?
- threat
- 2.Sd7#
- 1...Qxe5
- 2.Qxe5#
- 1...Bd7
- 2.Sxd7#
- 1...Sd3!
- threat
- 1.Qg4?
- threat
- 2.Bb6#
- 2.Qxg1#
- 1...Qxe5
- 2.Bb6#
- 1...Qf6
- 2.Bb6#
- 1...Qg7
- 2.Bb6#
- 1...Qh1
- 2.Bb6#
- 1...Qh2
- 2.Bb6#
- 1...Qh3
- 2.Bb6#
- 1...Qh4
- 2.Bb6#
- 1...Qh6
- 2.Bb6#
- 1...Qf8
- 2.Bb6#
- 1...Qg8
- 2.Bb6#
- 1...Rb1
- 2.Qxg1#
- 2.Qc4#
- 1...Rd1
- 2.Bb6#
- 2.Qc4#
- 1...Rc3
- 2.Bb6#
- 1...Rc4
- 2.Qxc4#
- 1...Bf2
- 2.Bb6#
- 1...Bh2
- 2.Bb6#
- 2.Qd4#
- 1...Be3
- 2.Bb6#
- 1...Bd4
- 2.Qxd4#
- 1...Sc2
- 2.Sd3#
- 2.Bb6#
- 2.Qc4#
- 1...Sg2
- 2.Sd3#
- 2.Bb6#
- 1...Sd3
- 2.Sxd3#
- 1...Sf3
- 2.Sd3#
- 2.Bb6#
- 1...Bd7!
- threat
- 1.Qf4?
- threat
- 2.Bb6#
- 1...Rb1
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...Bd4
- 2.Qxd4#
- 1...Sd3
- 2.Sxd3#
- 1...Bd7!
- threat
- 1.Sf3+?
- Keys
- 1.Qe4!
- threat
- 2.Bb6#
- 1...Rb1
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...Bd4
- 2.Qxd4#
- 1...Bd7
- 2.Sxd7#
- 1...Sd3
- 2.Sxd3#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- Q(i);OGATE,P_SPINQ(i),XS(B)::QAR2(C),XQ(i)
- R(a);SBLOCK::QAR(C)+S(B),DCHECK
- B(c);N_GUARD::QAB(C),XB(c)
- B(c);N_GUARD::QAB(C)
- B(c);SBLOCK::QAR(C)+S(B),DCHECK
- S(d);SBLOCK::B(E)
- Tries
- Try
- S(B);CHECK
- Vars
- Q(i);N_GUARD,P_SPINQ(i)::QAR2(C),XQ(i)
- Refutation
- P(g);P_SPINP(g)
- Try
- S(B);CHECK
- Vars
- Q(i);N_GUARD,P_SPINQ(i)::QAR2(C),XQ(i)
- Refutation
- P(g);P_SPINP(g)
- Try
- S(B);CHECK
- Vars
- Q(i);N_GUARD,P_SPINQ(i)::QAR2(C),XQ(i)
- Refutation
- P(g);P_SPINP(g)
- Try
- S(B);CHECK
- Vars
- Q(i);N_GUARD,P_SPINQ(i)::QAR2(C),XQ(i)
- Refutation
- P(g);P_SPINP(g)
- Try
- S(B);CHECK
- Vars
- Q(i);N_GUARD,P_SPINQ(i)::QAR2(C),XQ(i)
- Refutation
- P(g);P_SPINP(g)
- Try
- B(A);
- Threat
- QAR(C)+S(B),DCHECK
- Vars
- Q(i);OGATE,P_SPINQ(i),XS(B)::QAR2(C),XQ(i)
- S(b);::QAR(C)+S(B),DCHECK,XS(b)
- Refutation
- B(h);
- Try
- R(G);
- Threat
- QAR(C)+S(B),DCHECK
- Vars
- Q(i);OGATE,P_SPINQ(i),XS(B)::QAR2(C),XQ(i)
- B(h);::QAR(C)+S(B),DCHECK,XB(h)
- Refutation
- S(b);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(i);XS(B)::B(E)
- Q(i);::B(E)
- R(a);::B(E)
- R(a);N_GUARD::QAR1(C),XR(a)
- B(c);::B(E)
- B(c);N_GUARD::QAB1(C),XB(c)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- B(h);
- Try
- Q(C);
- Threat
- B(E)
- Vars
- R(a);N_GUARD::QAR1(C)
- R(a);N_GUARD::QAR1(C),XR(a)
- B(c);N_GUARD::QAB1(C),XB(c)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- B(h);
- Try
- Actual
- Q(C);
- Threat
- B(E)
- Vars
- R(a);N_GUARD::QAR1(C)
- R(a);N_GUARD::QAR1(C),XR(a)
- B(c);N_GUARD::QAB1(C),XB(c)
- B(h);N_GUARD::S(B),XB(h)
- S(b);N_GUARD::S(B),XS(b)
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).