MESON Chess Problem Database
Problem Display
PID: 240224 (3NNnq1/p2p1Rp1/rk2b1rR/8/p2KP3/3B4/3B4/6Q1 w - - 0 1)
Cristoffanini, Guido
Tijdschrift vd NSB, 1933
#2
9 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rg2
- 2.Qb1#
- 1...Rg3
- 2.Qb1#
- 1...Rg4
- 2.Qb1#
- 1...Rxh6
- 2.Ke5#
- 1...Ba2
- 2.Ke5#
- 1...Bb3
- 2.Ke5#
- 1...Bh3
- 2.Kc4#
- 2.Kd5#
- 2.Ke5#
- 2.Qb1#
- 1...Bc4
- 2.Kxc4#
- 1...Bg4
- 2.Kc4#
- 2.Kd5#
- 2.Ke5#
- 2.Qb1#
- 1...Bd5
- 2.Kxd5#
- 2.Ke5#
- 1...Bf5
- 2.Kc4#
- 2.Kd5#
- 2.Ke5#
- 2.Qb1#
- 1...Bxf7
- 2.Ke5#
- 1...d5
- 2.Rb7#
- 2.Qb1#
- 1...d6
- 2.Rb7#
- 1...Rg2
- Tries
- 1.Kc3+?
- 1...Ka5
- 2.Kb2#
- 2.Kc2#
- 2.Sb7#
- 2.Qc5#
- 1...Rxg1!
- 1...Ka5
- 1.Rxd7?
- threat
- 2.Rd6#
- 2.Rb7#
- 1...Bxd7
- 2.Ke5#
- 1...Bc4
- 2.Rb7#
- 1...Qf7
- 2.Rd6#
- 1...Ba2
- 2.Ke5#
- 2.Rb7#
- 1...Bb3
- 2.Ke5#
- 2.Rb7#
- 1...Bh3
- 2.Ke5#
- 2.Rb7#
- 1...Bg4
- 2.Ke5#
- 2.Rb7#
- 1...Bd5
- 2.Ke5#
- 1...Bf5
- 2.Ke5#
- 2.Rb7#
- 1...Bf7
- 2.Ke5#
- 2.Rb7#
- 1...Sxd7!
- threat
- 1.Qh2?
- threat
- 2.Qd6#
- 2.Qc7#
- 2.Qb8#
- 1...Bxf7
- 2.Qc7#
- 2.Qb8#
- 1...Bc4
- 2.Qb8#
- 1...Ba2
- 2.Qc7#
- 2.Qb8#
- 1...Bb3
- 2.Qc7#
- 2.Qb8#
- 1...Bh3
- 2.Qc7#
- 2.Qb8#
- 1...Bg4
- 2.Qc7#
- 2.Qb8#
- 1...Bd5
- 2.Qc7#
- 1...Bf5
- 2.Qc7#
- 2.Qb8#
- 1...d6
- 2.Rb7#
- 2.Qxd6#
- 1...Rg3!
- threat
- 1.Qc1?
- threat
- 2.Qc5#
- 2.Qc7#
- 1...Ra5
- 2.Qc7#
- 1...Rg5
- 2.Qc7#
- 1...d6
- 2.Rb7#
- 2.Qc6#
- 2.Qc7#
- 1...Bc4!
- threat
- 1.Qg3?
- threat
- 2.Qd6#
- 2.Qc7#
- 2.Qb8#
- 1...Bxf7
- 2.Qc7#
- 2.Qb8#
- 1...Bc4
- 2.Qb8#
- 1...Ba2
- 2.Qc7#
- 2.Qb8#
- 1...Bb3
- 2.Qc7#
- 2.Qb8#
- 1...Bh3
- 2.Qc7#
- 2.Qb8#
- 1...Bg4
- 2.Qc7#
- 2.Qb8#
- 1...Bd5
- 2.Qc7#
- 1...Bf5
- 2.Qc7#
- 2.Qb8#
- 1...d6
- 2.Rb7#
- 2.Qxd6#
- 1...Rxg3!
- threat
- 1.Kc3+?
- Keys
- 1.Rf5!
- threat
- 2.Rb5#
- 1...Bxf5
- 2.Ke5#
- 1...Bc4
- 2.Kc3#
- 1...Ra5
- 2.Bxa5#
- 1...Rg5
- 2.Qb1#
- 1...Bd5
- 2.Ke5#
- 1...d5
- 2.Qb1#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 8
- Sets
- R(e);P_SPINB(d)::QAR(A)
- R(e);P_PINP(E),P_SPINB(d)::QAR(A)
- R(e);N_GUARD,XR(F)::QAB(A)+K(D)
- B(d);P_SPINR(e)::QAB(A)+K(D)
- B(d);P_SPINR(e)::QAB(A)+K(D),XB(d)
- B(d);P_SPINR(e),XR(G)::QAB(A)+K(D)
- P(g);OGATE::R1(G)
- Tries
- Try
- K(D);CHECK,S_FLIGHT
- Refutation
- R(e);P_SPINB(d),XQ(A)
- Try
- R(G);XP(g)
- Threat
- DUALS(2)
- Vars
- B(d);P_SPINR(e),XR(G)::QAB(A)+K(D)
- B(d);P_SPINR(e)::R1(G)
- Q(j);::R(G)
- B(d);P_SPINR(e)::QAB(A)+K(D)
- Refutation
- S(i);XR(G)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(d);P_SPINR(e)::QAR2(A)
- B(d);P_SPINR(e)::QAB1(A)
- Refutation
- R(e);P_SPINB(d)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(b);::QAB1(A)
- R(e);P_SPINB(d)::QAB1(A)
- Refutation
- B(d);P_SPINR(e)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(d);P_SPINR(e)::QAR2(A)
- B(d);P_SPINR(e)::QAB1(A)
- Refutation
- R(e);P_SPINB(d),XQ(A)
- Try
- Actual
- R(G);
- Threat
- R1(G)
- Vars
- B(d);P_SPINR(e),XR(G)::QAB(A)+K(D)
- B(d);P_SPINR(e)::QAB(A)+K(D)
- R(b);N_GUARD::B(B),XR(b)
- R(e);P_SPINB(d)::QAR(A)
- P(g);S_CUTB(d)::QAR(A)
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).