MESON Chess Problem Database
Problem Display
PID: 72848 (4N1B1/3rpn2/1p5n/1KBk4/2p2Rp1/1p2Q3/3r1Nq1/8 w - - 0 1)
Kovacevic, Marjan
2nd HM., Biscan MT, 2006
#2
7 + 11
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qe4#
- 1...Qh3
- 2.Qe4#
- 1...Qe4
- 2.Qxe4#
- 1...Qg1
- 2.Qe4#
- 1...Qxf2
- 2.Qe4#
- 1...Qh2
- 2.Qe4#
- 1...Qg3
- 2.Qe4#
- 1...Ra2
- 2.Rd4#
- 1...Rb2
- 2.Rd4#
- 1...Rc2
- 2.Rd4#
- 1...Re2
- 2.Rd4#
- 1...Rxf2
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Rd6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Rd8
- 2.Sc7#
- 1...e6
- 2.Sf6#
- 1...Qf1
- Tries
- 1.Sd3?
- threat
- 2.Sb4#
- 2.Rd4#
- 2.Qe5#
- 1...Sxg8
- 2.Sb4#
- 2.Rd4#
- 1...cxd3
- 2.Rd4#
- 1...bxc5
- 2.Qe5#
- 1...Qe4
- 2.Qxe4#
- 1...e5
- 2.Qxe5#
- 1...Qe2
- 2.Sb4#
- 2.Rd4#
- 1...Re2
- 2.Sb4#
- 2.Rd4#
- 1...Sf5
- 2.Sb4#
- 2.Qe5#
- 1...e6
- 2.Sb4#
- 2.Sf6#
- 2.Rd4#
- 2.Qd4#
- 1...Rxd3!
- threat
- 1.Sg7?
- threat
- 2.Qe6#
- 1...Qe4
- 2.Qxe4#
- 1...Re2
- 2.Rd4#
- 2.Qd4#
- 1...e5
- 2.Qxd2#
- 1...e6
- 2.Qxe6#
- 1...Rd6!
- threat
- 1.Bd6?
- threat
- 2.Qe5#
- 1...Rxd6
- 2.Sc7#
- 1...exd6
- 2.Sf6#
- 1...Qe4
- 2.Qxe4#
- 1...e5
- 2.Qxe5#
- 1...Re2
- 2.Rd4#
- 1...e6
- 2.Qxd2#
- 1...Sxg8!
- threat
- 1.Bxf7+?
- 1...e6
- 2.Sf6#
- 2.Bxe6#
- 2.Qxe6#
- 1...Sxf7!
- 1...e6
- 1.Re4?
- threat
- 2.Re5#
- 2.Qxd2#
- 1...Qxe4
- 2.Qxe4#
- 1...Qxf2
- 2.Re5#
- 1...Rxf2
- 2.Rd4#
- 2.Re5#
- 2.Qd4#
- 1...Sxg8
- 2.Qxd2#
- 1...e5
- 2.Rxe5#
- 1...Qf1
- 2.Re5#
- 1...Qf3
- 2.Re5#
- 1...Qh3
- 2.Re5#
- 1...Qh2
- 2.Qxd2#
- 1...Rd1
- 2.Re5#
- 1...Ra2
- 2.Rd4#
- 2.Re5#
- 2.Qd4#
- 1...Rb2
- 2.Rd4#
- 2.Re5#
- 2.Qd4#
- 1...Rc2
- 2.Rd4#
- 2.Re5#
- 2.Qd4#
- 1...Re2
- 2.Rd4#
- 2.Re5#
- 2.Qd4#
- 1...Rd3
- 2.Re5#
- 1...Rd4
- 2.Rxd4#
- 2.Re5#
- 2.Qxd4#
- 1...Sf5
- 2.Re5#
- 1...c3
- 2.Re5#
- 1...e6
- 2.Sf6#
- 2.Qxd2#
- 1...Qg3!
- threat
- 1.Rf5+?
- 1...e5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sxf5!
- 1...e5
- 1.Qd4+?
- 1...Ke6
- 2.Sg7#
- 1...Rxd4!
- 1...Ke6
- 1.Sd3?
- Keys
- 1.Rf6!
- threat
- 2.Qe6#
- 1...bxc5
- 2.Qxc5#
- 1...exf6
- 2.Sxf6#
- 1...Qe4
- 2.Qxe4#
- 1...Re2
- 2.Qd4#
- 1...Rd6
- 2.Sc7#
- 1...e5
- 2.Qxd2#
- 1...e6
- 2.Qxe6#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 13
- Sets
- Q(b);N_GUARD::QAB1(B)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- Q(b);N_GUARD,XS(A)::QAB1(B)
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,XS(A)::R1(C)
- R(a);N_GUARD::R1(C),XR(a)
- R(i);N_GUARD::S(F)
- R(i);N_GUARD::S(F),XR(i)
- P(j);N_GUARD,N_SPINS(k)::S(F)
- Tries
- Try
- S(A);
- Threat
- DUALS(3)
- Vars
- P(d);XS(A)::R1(C)
- P(g);XB(E)::QAR1(B)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- P(j);::QAR1(B),XP(j)
- Refutation
- R(a);XS(A)
- Try
- S(F);
- Threat
- QAB1(B)
- Vars
- Q(b);N_GUARD::QAB1(B),XQ(b)
- P(j);SBLOCK::QAR(B),XR(a)
- P(j);N_SPINS(k)::QAB1(B),XP(j)
- Refutation
- R(i);
- Try
- B(E);
- Threat
- QAR1(B)
- Vars
- R(i);N_GUARD,SBLOCK,XB(E)::S(F)
- P(j);N_GUARD,SBLOCK,XB(E)::S(F)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- P(j);::QAR1(B),XP(j)
- R(a);N_GUARD::R1(C)
- P(j);N_SPINS(k),SBLOCK::QAR(B),XR(a)
- Refutation
- S(h);N_SPINS(k),XB(G)
- Try
- B(G);CHECK,XS(k)
- Refutation
- S(h);XB(G)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,XR(C)::QAB1(B),XQ(b)
- Q(b);XS(A)::R1(C)
- S(h);N_SPINS(k),XB(G)::QAR(B),XR(a)
- P(j);::R1(C),XP(j)
- Q(b);::R1(C)
- Q(b);::QAR(B),XR(a)
- R(a);::R1(C)
- S(h);::R1(C)
- P(d);::R1(C)
- Refutation
- Q(b);
- Try
- R(C);CHECK
- Refutation
- S(h);XR(C)
- Try
- Q(B);CHECK
- Vars
- K(f);S_FLIGHT::S(F)
- Refutation
- R(a);XQ(B)
- Try
- Actual
- R(C);
- Threat
- QAB1(B)
- Vars
- P(g);OGATE,XB(E)::QAR1(B),XP(g)
- P(j);XR(C)::S(F),XP(j)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- R(a);N_GUARD::QAR1(B)
- R(i);N_GUARD::S(F)
- P(j);SBLOCK::QAR(B),XR(a)
- P(j);N_SPINS(k)::QAB1(B),XP(j)
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