MESON Chess Problem Database
Problem Display
PID: 52807 (q2nN3/2R2p2/1pr2B1K/1BkP4/2Pp2R1/P2b4/Q4N2/2n5 w - - 0 1)
Groeneveld, Cornelis
1st Comm., Ahues-75 JT, 1998
#2
11 + 9
| 23 | Die Schwalbe | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Qxa3
- 2.Qxa3#
- 1...Rxc7
- 2.Bxd4#
- 1...Bf1
- 2.Se4#
- 1...Be2
- 2.Se4#
- 1...Bxc4
- 2.Qxc4#
- 1...Be4
- 2.Sxe4#
- 1...Bg6
- 2.Bxd4#
- 2.Be7#
- 1...Sxa2
- 2.Sxd3#
- 1...Se2
- 2.Sxd3#
- 1...Sb3
- 2.Sxd3#
- 1...Se6
- 2.Be7#
- 1...Sb7
- 2.Rxc6#
- 1...Qxa3
- Tries
- 1.Kg5?
- threat
- 2.Bxd4#
- 2.Be7#
- 1...Qxa3
- 2.Be7#
- 2.Qxa3#
- 1...Rxc7
- 2.Bxd4#
- 1...Bxc4
- 2.Qxc4#
- 1...Be4
- 2.Sxe4#
- 2.Be7#
- 1...Se2
- 2.Sxd3#
- 2.Be7#
- 1...Sb3
- 2.Sxd3#
- 2.Be7#
- 1...Sb7
- 2.Bxd4#
- 2.Rxc6#
- 1...Se6+!
- threat
- 1.Kh5?
- threat
- 2.Bxd4#
- 2.Be7#
- 1...Qxa3
- 2.Be7#
- 2.Qxa3#
- 1...Rxc7
- 2.Bxd4#
- 1...Bxc4
- 2.Qxc4#
- 1...Be4
- 2.Sxe4#
- 2.Be7#
- 1...Se2
- 2.Sxd3#
- 2.Be7#
- 1...Sb3
- 2.Sxd3#
- 2.Be7#
- 1...Se6
- 2.Be7#
- 1...Sb7
- 2.Bxd4#
- 2.Rxc6#
- 1...Bg6+!
- threat
- 1.Kg7?
- threat
- 2.Bxd4#
- 2.Be7#
- 1...Qxa3
- 2.Be7#
- 2.Qxa3#
- 1...Rxc7
- 2.Bxd4#
- 1...Bxc4
- 2.Qxc4#
- 1...Be4
- 2.Sxe4#
- 2.Be7#
- 1...Se2
- 2.Sxd3#
- 2.Be7#
- 1...Sb3
- 2.Sxd3#
- 2.Be7#
- 1...Sb7
- 2.Bxd4#
- 2.Rxc6#
- 1...Se6+!
- threat
- 1.Rg6?
- threat
- 2.Be7#
- 1...Bxc4
- 2.Qxc4#
- 1...Sb7
- 2.Rxc6#
- 1...Rxc7!
- threat
- 1.Qa1?
- threat
- 2.Qxd4#
- 1...Qxa3
- 2.Qxa3#
- 1...Se2
- 2.Sxd3#
- 1...Sb3
- 2.Sxd3#
- 1...Se6
- 2.Be7#
- 1...Bxc4!
- threat
- 1.Qb2?
- threat
- 2.Qxd4#
- 2.Qb4#
- 1...Qxa3
- 2.Qxa3#
- 1...Qa4
- 2.Qxd4#
- 1...Qa5
- 2.Qxd4#
- 1...Sa2
- 2.Sxd3#
- 2.Qxd4#
- 1...Se2
- 2.Sxd3#
- 2.Qb4#
- 1...Sb3
- 2.Sxd3#
- 1...Se6
- 2.Be7#
- 2.Qb4#
- 1...Bxc4!
- threat
- 1.dxc6?
- threat
- 2.Bxd4#
- 2.Be7#
- 1...Qxa3
- 2.Be7#
- 2.Qxa3#
- 1...Bxc4
- 2.Qxc4#
- 1...Be4
- 2.Sxe4#
- 2.Be7#
- 1...Se2
- 2.Sxd3#
- 2.Be7#
- 1...Sb3
- 2.Sxd3#
- 2.Be7#
- 1...Se6
- 2.Be7#
- 1...Sb7
- 2.Bxd4#
- 2.cxb7#
- 1...Qxc6!
- threat
- 1.d6?
- threat
- 2.Bxd4#
- 1...Qxa3
- 2.Qxa3#
- 1...Bxc4
- 2.Qxc4#
- 1...Be4
- 2.Sxe4#
- 1...Se2
- 2.Sxd3#
- 1...Sb3
- 2.Sxd3#
- 1...Se6!
- threat
- 1.Kg5?
- Keys
- 1.Qe2!
- threat
- 2.Qe7#
- 1...Rxc7
- 2.Bxd4#
- 1...Bxe2
- 2.Se4#
- 1...Bxc4
- 2.Qxc4#
- 1...Sxe2
- 2.Sxd3#
- 1...Be4
- 2.Sxe4#
- 1...Se6
- 2.Be7#
- 1...Sb7
- 2.Rxc6#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(h);OGATE,XP(C)::QAB(A),XQ(h)
- R(f);N_PINB(H),N_SPINR(f),XR(J)::B(H),XP(c)
- B(b);N_GUARD::S(B)
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- B(b);N_GUARD::S(B),XB(b)
- S(a);N_GUARD,XQ(A)::S(B),XB(b)
- S(a);N_GUARD::S(B),XB(b)
- S(i);N_PINB(H)::B(H)
- S(i);N_GUARD,S_CUTQ(h)::R1(J),XR(f)
- Tries
- Try
- K(I);N_SPINB(H),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(f);N_SPINR(f),XR(J)::B(H),XP(c)
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- Refutation
- S(i);CHECK
- Try
- K(I);N_SPINB(H),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(f);N_SPINR(f),XR(J)::B(H),XP(c)
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(i);::B(H)
- Refutation
- B(b);CHECK
- Try
- K(I);N_SPINB(H),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(f);N_SPINR(f),XR(J)::B(H),XP(c)
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- Refutation
- S(i);CHECK
- Try
- R(E);N_SPINB(H)
- Threat
- B(H)
- Vars
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(i);N_GUARD,S_CUTQ(h)::R1(J),XR(f)
- Refutation
- R(f);N_SPINR(f),XR(J)
- Try
- Q(A);
- Threat
- QAB1(A),XP(c)
- Vars
- Q(h);OGATE,XP(C)::QAB(A),XQ(h)
- S(a);N_GUARD::S(B),XB(b)
- S(i);N_PINB(H)::B(H)
- Refutation
- B(b);XP(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(h);OGATE,XP(C)::QAB(A),XQ(h)
- Q(h);::QAB1(A),XP(c)
- S(a);N_GUARD::S(B),XB(b)
- Refutation
- B(b);XP(D)
- Try
- P(G);N_SPINB(H),XR(f)
- Threat
- DUALS(2)
- Vars
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(i);::B(H)
- Refutation
- Q(h);P_PINB(H),P_SPINQ(h),XP(G)
- Try
- P(G);N_SPINB(H)
- Threat
- B(H),XP(c)
- Vars
- Q(h);OGATE,XP(C)::QAB(A),XQ(h)
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- B(b);N_GUARD::S(B),XB(b)
- S(a);N_GUARD::S(B),XB(b)
- Refutation
- S(i);
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- R(f);N_PINB(H),N_SPINR(f),XR(J)::B(H),XP(c)
- B(b);N_GUARD,XQ(A)::S(B)
- B(b);OGATE,XP(D)::QAR1(A),XB(b)
- S(a);N_GUARD,XQ(A)::S(B),XB(b)
- B(b);N_GUARD::S(B),XB(b)
- S(i);N_PINB(H)::B(H)
- S(i);N_GUARD,S_CUTQ(h)::R1(J),XR(f)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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