MESON Chess Problem Database
Problem Display
PID: 174429 (1r2B3/1pR2bB1/2R1n1n1/Q1pk1P2/2rP2N1/pP4N1/KPP5/6bq w - - 0 1)
Groeneveld, Cornelis
Variantim, 1992
#2
13 + 11
SOLUTION
- SOUND
- Sets
- 1...Bh2
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...bxc6
- 2.Rd7#
- 1...Bh2
- Tries
- 1.Be5?
- threat
- 2.Sf6#
- 2.Rd6#
- 1...Rxd4
- 2.Rd6#
- 1...Bxd4
- 2.Rd6#
- 1...Sxd4
- 2.Rd6#
- 1...bxc6
- 2.Sf6#
- 2.Bxc6#
- 2.Rd7#
- 1...Qh4
- 2.Rd6#
- 1...Qh8
- 2.Rd6#
- 1...Rd8
- 2.Sf6#
- 1...Sxe5!
- threat
- 1.Qb6?
- threat
- 2.Rd6#
- 2.Rd7#
- 1...Bxe8
- 2.Rd6#
- 1...Sxc7
- 2.Rd6#
- 1...bxc6
- 2.Rd7#
- 2.Qxc6#
- 1...Se5
- 2.Rd6#
- 1...Sef8
- 2.Rd6#
- 1...Sgf8
- 2.Rd6#
- 1...Rd8!
- threat
- 1.Qb5?
- threat
- 2.Rd7#
- 2.Qxc4#
- 2.bxc4#
- 1...Rxc2
- 2.Rd7#
- 1...Rxd4
- 2.Rd7#
- 1...Bxe8
- 2.Qxc4#
- 2.bxc4#
- 1...Sxc7
- 2.Qxc4#
- 2.bxc4#
- 1...Sxg7
- 2.Rd7#
- 2.Qxc4#
- 1...bxc6
- 2.Rd7#
- 2.Qxc6#
- 1...Rc3
- 2.Rd7#
- 1...Ra4
- 2.Rd7#
- 1...Rb4
- 2.Rd7#
- 1...Rd8
- 2.Qxc4#
- 2.bxc4#
- 1...Sef8
- 2.Qxc4#
- 2.bxc4#
- 1...Sgf8
- 2.Qxc4#
- 2.bxc4#
- 1...Se5!
- threat
- 1.Qa6?
- threat
- 2.Rd6#
- 2.Rd7#
- 2.Qxc4#
- 2.bxc4#
- 1...Rxc2
- 2.Rd6#
- 2.Rd7#
- 1...Rxd4
- 2.Rd6#
- 2.Rd7#
- 1...Bxe8
- 2.Rd6#
- 2.Qxc4#
- 2.bxc4#
- 1...Sxc7
- 2.Rd6#
- 2.Qxc4#
- 2.bxc4#
- 1...Sxg7
- 2.Rd6#
- 2.Rd7#
- 2.Qxc4#
- 1...bxc6
- 2.Rd7#
- 2.Qxc6#
- 1...Se5
- 2.Rd6#
- 1...Rc3
- 2.Rd6#
- 2.Rd7#
- 1...Ra4
- 2.Rd6#
- 2.Rd7#
- 1...Rb4
- 2.Rd6#
- 2.Rd7#
- 1...Rd8
- 2.Qxc4#
- 2.bxc4#
- 1...Sef8
- 2.Rd6#
- 2.Qxc4#
- 2.bxc4#
- 1...Sgf8
- 2.Rd6#
- 2.Qxc4#
- 2.bxc4#
- 1...b5
- 2.Rd6#
- 2.Rd7#
- 1...b6
- 2.Qxc4#
- 2.bxc4#
- 1...bxa6!
- threat
- 1.dxc5?
- threat
- 2.Rd6#
- 1...Rxc5
- 2.c4#
- 1...Bxc5
- 2.Se3#
- 1...Sxc5
- 2.Bxf7#
- 1...bxc6
- 2.Bxc6#
- 2.Rd7#
- 1...Rd8!
- threat
- 1.Be5?
- Keys
- 1.Qd2!
- threat
- 2.Sf6#
- 1...Rxd4
- 2.c4#
- 1...Bxd4
- 2.Se3#
- 1...Sxd4
- 2.Bxf7#
- 1...cxd4
- 2.bxc4#
- 1...bxc6
- 2.Rd7#
- 1...Qh4
- 2.Qg2#
- threat
- 1.Qd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- B(a);N_GUARD::S(G)
- B(a);N_GUARD::S(G),XB(a)
- P(i);SBLOCK,XR(J)::R(K)
- Tries
- Try
- B(L);
- Threat
- DUALS(2)
- Vars
- R(d);XP(F)::R1(J)
- B(a);XP(F)::R1(J)
- S(g);XP(F)::R1(J)
- Q(b);::R1(J)
- R(k);::S(G)
- Refutation
- S(h);XB(L)
- Try
- Q(H);N_PINP(e)
- Threat
- DUALS(2)
- Vars
- B(j);XB(M)::R1(J)
- S(g);XR(K)::R1(J)
- S(h);::R1(J)
- S(g);::R1(J)
- Refutation
- R(k);
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- R(d);P_PINP(B),XP(C)::R(K)
- R(d);XP(F)::R(K)
- R(d);::R(K)
- Refutation
- S(h);
- Try
- Q(H);N_PINP(e)
- Threat
- DUALS(4)
- Vars
- S(h);::R1(J)
- Refutation
- P(i);XQ(H)
- Try
- P(F);XP(e)
- Threat
- R1(J)
- Vars
- R(d);OGATE,P_SPINR(d),XP(F)::P(C)
- B(a);N_GUARD,P_SPINB(a),XP(F)::S(G)
- S(g);OGATEB,P_SPINS(g),XP(F)::B(M),XB(j)
- Refutation
- R(k);
- Try
- Actual
- Q(H);N_PINP(e)
- Threat
- S(G)
- Vars
- R(d);OGATE,P_SPINR(d),XP(F)::P(C)
- B(a);N_GUARD,P_SPINB(a),XP(F)::S(G)
- S(g);OGATEB,P_SPINS(g),XP(F)::B(M),XB(j)
- P(e);P_SPINP(e),XP(F)::P(D),XR(d)
- P(i);SBLOCK,XR(J)::R(K)
- Q(b);N_GUARD::QAB(H)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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