MESON Chess Problem Database
Problem Display
PID: 69846 (2qr4/6B1/1Q2P3/p1n1RP2/3k4/1P3R2/4P3/3Kn2b w - - 0 1)
Burger, Robert Eugene
2nd HM., US Problem Bulletin, 1995
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Qxc5#
- 1...Qxe6
- 2.Qxc5#
- 1...Qb7
- 2.Qxc5#
- 1...Qd7
- 2.Qxc5#
- 1...Qa8
- 2.Qxc5#
- 1...Qb8
- 2.Qxc5#
- 1...Rd6
- 2.Qxd6#
- 1...Re8
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Rh8
- 2.Qd6#
- 1...Sc2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...a4
- 2.Qb4#
- 1...Qa6
- Tries
- 1.Kxe1?
- threat
- 2.Rd3#
- 1...Qa6
- 2.Qxc5#
- 1...Bxf3!
- threat
- 1.Kd2?
- threat
- 2.e3#
- 1...Sc2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sxf3+!
- threat
- 1.Rf4+?
- 1...Kc3+
- 2.Rd5#
- 1...Be4!
- 1...Kc3+
- 1.Re4+?
- 1...Kd5
- 2.Rd4#
- 1...Kxe4+!
- 1...Kd5
- 1.Qxa5?
- threat
- 2.Qc3#
- 2.Qb4#
- 2.Qa1#
- 1...Qxe6
- 2.Qc3#
- 2.Qa1#
- 2.Qxc5#
- 1...Bxf3
- 2.Qb4#
- 2.Qa1#
- 1...Sxf3
- 2.Qb4#
- 2.Qa1#
- 1...Sxe6
- 2.Rxe6#
- 1...Qa6
- 2.Qc3#
- 2.Qxc5#
- 1...Qb7
- 2.Qc3#
- 2.Qa1#
- 2.Qxc5#
- 1...Qa8
- 2.Qc3#
- 2.Qb4#
- 2.Qxc5#
- 1...Qb8
- 2.Qc3#
- 2.Qa1#
- 2.Qxc5#
- 1...Sc2
- 2.Qc3#
- 1...Sed3
- 2.e3#
- 1...Scd3
- 2.e3#
- 1...Sa4
- 2.Ree3#
- 1...Se4
- 2.Rd5#
- 1...Sa6
- 2.Ree3#
- 1...Sb7
- 2.Ree3#
- 1...Sd7
- 2.Qd5#
- 1...Sxb3!
- threat
- 1.Qb5?
- threat
- 2.Qc4#
- 1...Qxe6
- 2.Qxc5#
- 1...Sxb3
- 2.Ree3#
- 1...Sxe6
- 2.Rxe6#
- 1...Qa6
- 2.Qxc5#
- 1...Sa4
- 2.Ree3#
- 1...Se4
- 2.Rd5#
- 1...Sa6
- 2.Ree3#
- 1...Sb7
- 2.Ree3#
- 1...Sd7
- 2.Qd5#
- 1...Scd3!
- threat
- 1.Qc6?
- threat
- 2.Ree3#
- 2.Re4#
- 2.Rxc5#
- 1...Qxe6
- 2.Re4#
- 2.Rxe6#
- 2.Qxc5#
- 1...Bxf3
- 2.Re4#
- 1...Sxf3
- 2.Re4#
- 1...Sxb3
- 2.Ree3#
- 2.Re4#
- 2.Rxa5#
- 2.Rb5#
- 2.Rc5#
- 2.Qe4#
- 1...Sxe6
- 2.Re4#
- 2.Rxe6#
- 2.Qe4#
- 1...Sed3
- 2.Re4#
- 1...Qb7
- 2.Re4#
- 2.Qxc5#
- 1...Qd7
- 2.Re4#
- 2.Qxc5#
- 1...Qc7
- 2.Re4#
- 1...Qb8
- 2.Re4#
- 2.Qxc5#
- 1...Rd5
- 2.Qxd5#
- 1...Rd7
- 2.Re4#
- 1...Rf8
- 2.Re4#
- 2.Qd5#
- 2.Qd6#
- 1...Rg8
- 2.Re4#
- 2.Qd5#
- 2.Qd6#
- 1...Scd3
- 2.Re4#
- 2.e3#
- 1...Sa4
- 2.Ree3#
- 2.Re4#
- 2.Rxa5#
- 2.Rb5#
- 2.Rc5#
- 2.Qe4#
- 1...Se4
- 2.Rxe4#
- 2.Rd5#
- 2.Qxe4#
- 1...Sa6
- 2.Ree3#
- 2.Re4#
- 2.Rxa5#
- 2.Rb5#
- 2.Rc5#
- 2.Qe4#
- 1...Sb7
- 2.Ree3#
- 2.Re4#
- 2.Rxa5#
- 2.Rb5#
- 2.Rc5#
- 2.Qe4#
- 1...Sd7
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 2.Qd6#
- 1...Qxc6!
- threat
- 1.e3+?
- 1...Kc3+
- 2.Rd5#
- 1...Kd3!
- 1...Kc3+
- 1.Kxe1?
- Keys
- 1.Rc3!
- threat
- 2.Rc4#
- 1...Kxc3+
- 2.Rd5#
- 1...Qxe6
- 2.Qxc5#
- 1...Qa6
- 2.Qxc5#
- 1...Be4
- 2.Rexc5#
- 1...Bd5
- 2.Ree3#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 13
- Sets
- Q(f);N_GUARD::QAB1(G),XS(e)
- Q(f);N_GUARD,XP(H)::QAB1(G),XS(e)
- R(g);N_GUARD::QAR2(G),XR(g)
- R(g);N_GUARD::QAR2(G)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- P(d);N_GUARD::QAR2(G)
- Tries
- Try
- K(A);P-FLIGHT,XS(a)
- Threat
- R1(D)
- Vars
- Q(f);N_GUARD::QAB1(G),XS(e)
- Refutation
- B(b);XR(D)
- Try
- K(A);P-FLIGHT
- Threat
- P(B)
- Vars
- S(a);N_GUARD::R1(D)
- Refutation
- S(a);CHECK,XR(D)
- Try
- R(D);CHECK
- Vars
- K(c);CHECK,N_SPINS(e),S_FLIGHT::B(I)+R(E)
- Refutation
- B(b);P_SPINB(b)
- Try
- R(E);CHECK
- Vars
- K(c);N_SPINS(e),P-FLIGHT::R1(E)
- Refutation
- K(c);CHECK,N_SPINS(e),P-FLIGHT,XR(E)
- Try
- Q(G);N_PINS(e),XP(d)
- Threat
- DUALS(3)
- Vars
- S(e);OGATE,XP(H)::B(I)+R(E),XS(e)
- S(a);::QAB1(G)
- S(a);SBLOCK::P(B)
- S(e);SBLOCK::P(B)
- S(e);::B(I)+R(E)
- S(e);SBLOCK::B(I)+R(E),DCHECK
- S(e);OGATE::QAR1(G)
- Refutation
- S(e);XP(C)
- Try
- Q(G);N_PINS(e)
- Threat
- QAR1(G)
- Vars
- Q(f);N_GUARD,XP(H)::QAB1(G),XS(e)
- S(e);XP(C)::B(I)+R(E)
- S(e);OGATE,XP(H)::B(I)+R(E),XS(e)
- Q(f);N_GUARD::QAB1(G),XS(e)
- S(e);::B(I)+R(E)
- S(e);SBLOCK::B(I)+R(E),DCHECK
- S(e);OGATE::QAR1(G)
- Refutation
- S(e);
- Try
- Q(G);N_PINS(e)
- Threat
- DUALS(3)
- Vars
- B(b);P_PINP(B),XR(D)::B(I)+R(E),DCHECK
- S(a);XR(D)::B(I)+R(E),DCHECK
- S(a);::B(I)+R(E),DCHECK
- Q(f);::B(I)+R(E),DCHECK
- R(g);N_GUARD::QAR1(G),XR(g)
- R(g);::B(I)+R(E),DCHECK
- Refutation
- Q(f);XQ(G)
- Try
- P(B);CHECK
- Vars
- K(c);CHECK,N_SPINS(e),S_FLIGHT::B(I)+R(E)
- Refutation
- K(c);N_SPINS(e),P-FLIGHT
- Try
- Actual
- R(D);
- Threat
- R1(D)
- Vars
- K(c);CHECK,N_SPINS(e),S_FLIGHT,XR(D)::B(I)+R(E)
- Q(f);N_GUARD,XP(H)::QAB1(G),XS(e)
- Q(f);N_GUARD::QAB1(G),XS(e)
- B(b);SBLOCK::B(I)+R(E),XS(e)
- B(b);SBLOCK::B(I)+R(E)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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