MESON Chess Problem Database
Problem Display
PID: 234841 (n2R4/nK1B4/3k1Pp1/3N4/2QNrp2/3Rp3/7B/7b w - - 0 1)
Groeneveld, Cornelis
Il Due Mosse, 1956
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Bh3#
- 2.Ba4#
- 2.Bg4#
- 2.Bb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 2.Be8#
- 1...Re5
- Tries
- 1.Sb5+?
- 1...Ke5
- 2.Re8#
- 1...Sxb5!
- 1...Ke5
- 1.Sf5+?
- 1...Ke5
- 2.Re8#
- 1...gxf5!
- 1...Ke5
- 1.Sc3?
- threat
- 2.Qd5#
- 1...Re5+
- 2.Bc6#
- 1...Re6+
- 2.Sf3#
- 1...Re7+
- 2.Sf3#
- 1...Re8+
- 2.Sf3#
- 1...Ke5
- 2.Qe6#
- 1...Sb6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...Rxd4+!
- threat
- 1.Sb4?
- threat
- 2.Qd5#
- 1...Re5+
- 2.Bc6#
- 1...Re6+
- 2.Sf3#
- 1...Re7+
- 2.Sf3#
- 1...Re8+
- 2.Sf3#
- 1...Ke5
- 2.Qe6#
- 1...Sb6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...Rxd4+!
- threat
- 1.Se7?
- threat
- 2.Qd5#
- 1...Re5+
- 2.Bc6#
- 1...Re6+
- 2.Sf3#
- 1...Rxe7+
- 2.Sf3#
- 1...Ke5
- 2.Qe6#
- 1...Sb6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- 1...Rxd4+!
- threat
- 1.Bxf4+?
- 1...Re5
- 2.Bh3#
- 2.Ba4#
- 2.Bg4#
- 2.Bb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 2.Be8#
- 1...Rxf4!
- 1...Re5
- 1.Qc5+?
- 1...Ke5
- 2.Re8#
- 1...Kxc5!
- 1...Ke5
- 1.Qc6+?
- 1...Ke5
- 2.Re8#
- 2.Qe6#
- 1...Sxc6!
- 1...Ke5
- 1.Qc7+?
- 1...Kxd5
- 2.Bh3#
- 2.Ba4#
- 2.Bg4#
- 2.Bb5#
- 2.Bf5#
- 2.Be6#
- 2.Bc8#
- 2.Be8#
- 1...Sxc7!
- 1...Kxd5
- 1.Sb5+?
- Keys
- 1.Sxf4!
- threat
- 2.Qd5#
- 1...Rxd4+
- 2.Sg2#
- 1...Rxf4+
- 2.Sf3#
- 1...Re5+
- 2.Bc6#
- 1...Re6+
- 2.Sf3#
- 1...Re7+
- 2.Sf3#
- 1...Re8+
- 2.Sf3#
- 1...Ke5
- 2.Qe6#
- 1...Sb6
- 2.Qc7#
- 1...Sc7
- 2.Qxc7#
- threat
- 1.Sxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(D);CHECK
- Vars
- K(e);S_FLIGHT::R(I)
- Refutation
- S(g);XS(D)
- Try
- S(D);CHECK
- Vars
- K(e);S_FLIGHT::R(I)
- Refutation
- P(f);XS(D)
- Try
- S(E);
- Threat
- QAR1(C)
- Vars
- R(c);CHECK,N_SPINP(d),SBLOCK::R(I)+B(H)
- R(c);CHECK,N_GUARD::R(B)+S(D)
- R(c);CHECK,N_GUARD,P_PINB(H)::R(B)+S(D)
- K(e);S_FLIGHT::QAR1(C)
- S(h);N_GUARD::QAB1(C)
- S(h);N_GUARD::QAB1(C),XS(h)
- Refutation
- R(c);CHECK,P_SPINR(c),XS(D)
- Try
- S(E);
- Threat
- QAR1(C)
- Vars
- R(c);CHECK,N_SPINP(d),SBLOCK::R(I)+B(H)
- R(c);CHECK,N_GUARD::R(B)+S(D)
- R(c);CHECK,N_GUARD,P_PINB(H)::R(B)+S(D)
- K(e);S_FLIGHT::QAR1(C)
- S(h);N_GUARD::QAB1(C)
- S(h);N_GUARD::QAB1(C),XS(h)
- Refutation
- R(c);CHECK,P_SPINR(c),XS(D)
- Try
- S(E);
- Threat
- QAR1(C)
- Vars
- R(c);CHECK,N_SPINP(d),SBLOCK::R(I)+B(H)
- R(c);CHECK,N_GUARD::R(B)+S(D)
- R(c);CHECK,N_GUARD,P_PINB(H),XS(E)::R(B)+S(D)
- K(e);S_FLIGHT::QAR1(C)
- S(h);N_GUARD::QAB1(C)
- S(h);N_GUARD::QAB1(C),XS(h)
- Refutation
- R(c);CHECK,P_SPINR(c),XS(D)
- Try
- B(A);CHECK,XP(d)
- Refutation
- R(c);P_PINS(E),XB(A)
- Try
- Q(C);CHECK
- Vars
- K(e);S_FLIGHT::R(I)
- Refutation
- K(e);N_SPINP(d),S_FLIGHT,XQ(C)
- Try
- Q(C);CHECK
- Refutation
- S(g);XQ(C)
- Try
- Q(C);CHECK
- Refutation
- S(h);XQ(C)
- Try
- Actual
- S(E);XP(d)
- Threat
- QAR1(C)
- Vars
- R(c);CHECK,N_GUARD,P_SPINR(c),XS(D)::B(A)+S(E)
- R(c);CHECK,N_GUARD,P_SPINR(c),XS(E)::R(B)+S(D)
- R(c);CHECK,SBLOCK::R(I)+B(H)
- R(c);CHECK,N_GUARD::R(B)+S(D)
- R(c);CHECK,N_GUARD,P_PINB(H)::R(B)+S(D)
- K(e);S_FLIGHT::QAR1(C)
- S(h);N_GUARD::QAB1(C)
- S(h);N_GUARD::QAB1(C),XS(h)
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).