MESON Chess Problem Database
Problem Display
PID: 139975 (6BB/1q4n1/1b6/1R1rp1N1/1pNk4/1p6/1P2P3/2Q3K1 w - - 0 1)
Markevitch, Alex
StrateGems, 1998
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Rxd5#
- 1...Qc8
- 2.Rxd5#
- 1...Qa7
- 2.Rxd5#
- 1...Qc7
- 2.Rxd5#
- 1...Qe7
- 2.Rxd5#
- 1...Qb8
- 2.Rxd5#
- 1...Rxb5
- 2.Qe3#
- 1...Rc5
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Rd6
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Rd7
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Rd8
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Sf5
- 2.Qf4#
- 1...Se8
- 2.Qf4#
- 1...e4
- 2.Se6#
- 1...Qa6
- Tries
- 1.Sa3?
- threat
- 2.Rxb4#
- 2.Qd2#
- 1...Rxb5
- 2.Sxb5#
- 1...bxa3
- 2.Rb4#
- 2.Qc3#
- 1...Qc6
- 2.Qd2#
- 1...Qa6
- 2.Rxd5#
- 2.Qd2#
- 1...Qc8
- 2.Rxd5#
- 2.Qd2#
- 1...Qc7
- 2.Rxd5#
- 2.Qd2#
- 1...Qe7
- 2.Rxd5#
- 2.Qd2#
- 1...Rc5
- 2.Qd2#
- 1...Ba5
- 2.Qd2#
- 1...Bc5
- 2.Qd2#
- 1...Ba7
- 2.Qd2#
- 1...Bc7
- 2.Qd2#
- 1...Bd8
- 2.Qd2#
- 1...e4!
- threat
- 1.Sd6?
- threat
- 2.Sf3#
- 2.Rxb4#
- 2.Qd2#
- 1...Rxb5
- 2.Sxb5#
- 1...Rxd6
- 2.Rxb4#
- 2.Qd2#
- 1...Qc6
- 2.Sf3#
- 2.Qd2#
- 1...Qa6
- 2.Sf3#
- 2.Rxd5#
- 2.Qd2#
- 1...Qc8
- 2.Sf3#
- 2.Rxd5#
- 2.Qd2#
- 1...Qc7
- 2.Sf3#
- 2.Rxd5#
- 2.Qd2#
- 1...Qf7
- 2.Rxb4#
- 2.Qd2#
- 1...Rc5
- 2.Qd2#
- 1...Ba5
- 2.Sf3#
- 2.Qd2#
- 1...Bc5
- 2.Sf3#
- 2.Qd2#
- 1...Ba7
- 2.Sf3#
- 2.Qd2#
- 1...Bc7
- 2.Sf3#
- 2.Qd2#
- 1...Bd8
- 2.Sf3#
- 2.Qd2#
- 1...e4!
- threat
- 1.Bxd5?
- threat
- 2.Sf3#
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Bc5
- 2.Qd2#
- 2.Qd1#
- 1...Qf7
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Sf5
- 2.Sf3#
- 2.Se6#
- 2.Bxe5#
- 2.Qd2#
- 2.Qf4#
- 2.Qd1#
- 1...e4
- 2.Se6#
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Qxd5!
- threat
- 1.Bxg7?
- threat
- 2.Qf4#
- 1...Qxg7
- 2.Rxd5#
- 1...Rxb5
- 2.Qe3#
- 1...Rc5
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Rd6
- 2.Bxe5#
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Rd7
- 2.Bxe5#
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Rd8
- 2.Bxe5#
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 1...Qf7!
- threat
- 1.Rxb4?
- threat
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sxb6#
- 2.Sd6#
- 2.Qe3#
- 1...Qc6
- 2.Qe3#
- 1...Qa6
- 2.Qe3#
- 1...Qc8
- 2.Qe3#
- 1...Qc7
- 2.Qe3#
- 1...Qe7
- 2.Sd6#
- 2.Qe3#
- 1...Ra5
- 2.Sa3#
- 2.Se3#
- 2.Sxa5#
- 2.Sxb6#
- 2.Sd6#
- 2.Qe3#
- 1...Rb5
- 2.Qe3#
- 1...Rc5
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 2.Qc3#
- 1...Rd6
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sxb6#
- 2.Sxd6#
- 2.Qe3#
- 1...Ba5
- 2.Qe3#
- 1...Bc5
- 2.Qd2#
- 2.Qe3#
- 2.Qd1#
- 2.Qc3#
- 1...Ba7
- 2.Sb6#
- 2.Qe3#
- 1...Bc7
- 2.Sb6#
- 2.Qe3#
- 1...Bd8
- 2.Sb6#
- 2.Qe3#
- 1...Sf5
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sxe5#
- 2.Sxb6#
- 2.Sd6#
- 1...e4
- 2.Se6#
- 2.Qe3#
- 1...Kc5!
- threat
- 1.Qf4+?
- 1...e4
- 2.Qxe4#
- 1...exf4!
- 1...e4
- 1.Sa3?
- Keys
- 1.Qf1!
- threat
- 2.e3#
- 1...Kxc4+
- 2.e3#
- 1...Rxb5
- 2.Qf2#
- 1...Sf5
- 2.Qf4#
- threat
- 1.Qf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- Q(g);N_GUARD::R1(F),XR(d)
- R(d);XR(F)::QAB1(A)
- S(h);P_SPINP(e)::QAR2(A)
- P(e);P_SPINS(h),SBLOCK::S(G)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(d);XR(F)::S(E),XR(d)
- Q(g);::QAR2(A)
- R(d);::QAR2(A)
- B(f);::QAR2(A)
- Refutation
- P(e);P_SPINS(h)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(d);XR(F)::S(E),XR(d)
- R(d);::QAR2(A)
- Refutation
- P(e);P_SPINS(h)
- Try
- B(H);XR(d)
- Threat
- DUALS(4)
- Refutation
- Q(g);XB(H)
- Try
- B(I);P_PINP(e),XS(h)
- Threat
- QAR2(A)
- Vars
- Q(g);N_GUARD,N_SPINP(e),P_PINS(G),XB(I)::R1(F),XR(d)
- R(d);XR(F)::QAB1(A)
- Refutation
- Q(g);
- Try
- R(F);XP(b)
- Threat
- DUALS(6)
- Vars
- Q(g);::QAB1(A)
- R(d);::QAB1(A)
- B(f);::QAB1(A)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- P(e);P_SPINP(e),P_SPINS(h)::QAR1(A),XP(e)
- Refutation
- P(e);P_SPINS(h),XQ(A)
- Try
- Actual
- Q(A);
- Threat
- P(D)
- Vars
- K(c);CHECK,P-FLIGHT,P_SPINR(d),XS(E)::QAB(A)+P(D)
- R(d);XR(F)::QAB(A)
- S(h);P_SPINP(e)::QAR2(A)
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