MESON Chess Problem Database
Problem Display
PID: 258143 (nbNK4/2n2B2/p2Br3/1pP5/1Pk2pp1/2PR1r1R/P7/5Q2 w - - 0 1)
Derevchuk, Oleksandr Andrinovich
Astafyeva-30 JT (Kudesnik), 2021
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxf1
- 2.Rd4#
- 1...Rf2
- 2.Rd4#
- 1...Rxd3
- 2.Qxd3#
- 1...Se8
- 2.Bxe6#
- 1...Sb6
- 2.Sxb6#
- 1...Rxf1
- Tries
- 1.Se7?
- threat
- 2.Rdxf3#
- 1...Rxf1
- 2.Rd4#
- 1...Rxd3
- 2.Qxd3#
- 1...Rxh3
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rxh3#
- 1...Rf2
- 2.Rd4#
- 1...Re3
- 2.Rdxe3#
- 1...Rg3
- 2.Re3#
- 2.Rf3#
- 2.Rdxg3#
- 1...Sd5!
- threat
- 1.Bxf4?
- threat
- 2.Sd6#
- 1...Rxd3+
- 2.Qxd3#
- 1...Se8
- 2.Bxe6#
- 1...Sd5!
- threat
- 1.Bxc7?
- threat
- 2.Sd6#
- 2.Bxe6#
- 1...Rxd3+
- 2.Qxd3#
- 1...Sxc7
- 2.Sb6#
- 2.Sd6#
- 1...Re3
- 2.Sd6#
- 1...Sb6
- 2.Sxb6#
- 2.Sd6#
- 1...Bxc7+!
- threat
- 1.Be7?
- threat
- 2.Sd6#
- 1...Rxd3+
- 2.Qxd3#
- 1...Se8
- 2.Bxe6#
- 1...Sd5!
- threat
- 1.Bf8?
- threat
- 2.Sd6#
- 1...Rxd3+
- 2.Qxd3#
- 1...Se8
- 2.Bxe6#
- 1...Sd5!
- threat
- 1.Bxe6+?
- 1...Sd5
- 2.Bxd5#
- 2.Rdxf3#
- 1...Sxe6+!
- 1...Sd5
- 1.Rd1+?
- 1...Rxf1
- 2.Rd4#
- 1...Rd3
- 2.Qxd3#
- 1...Kxc3!
- 1...Rxf1
- 1.Rd2+?
- 1...Rxf1
- 2.Rd4#
- 1...Rd3
- 2.Qxd3#
- 1...Kxc3!
- 1...Rxf1
- 1.Re3+?
- 1...Kd5
- 2.Se7#
- 1...Rxf1!
- 1...Kd5
- 1.Rhxf3?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rxf4#
- 1...Sd5
- 2.Rde3#
- 2.Rd4#
- 1...gxf3!
- threat
- 1.Qe2?
- threat
- 2.Qe4#
- 1...Rxd3
- 2.Qxd3#
- 1...Sd5
- 2.Re3#
- 1...Re3!
- threat
- 1.Qxf3?
- threat
- 2.Rd4#
- 2.Qe4#
- 2.Qxf4#
- 1...gxh3
- 2.Rd4#
- 2.Qe4#
- 1...Sd5
- 2.Rd4#
- 2.Qxd5#
- 1...g3
- 2.Rd4#
- 2.Qe4#
- 1...gxf3!
- threat
- 1.Se7?
- Keys
- 1.Be5!
- threat
- 2.Sd6#
- 1...Rxd3+
- 2.Qxd3#
- 1...Sd5
- 2.Rdxf3#
- 1...Se8
- 2.Bxe6#
- threat
- 1.Be5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(a);XQ(A)::R1(D)
- R(a);::QAB(A)+R(D),DCHECK
- R(a);N_SPINR(g),OGATE,P_PINB(H),P_SPINR(a),XR(D)::QAB1(A),XR(a)
- S(h);N_GUARD::B(I),XR(g)
- S(i);N_GUARD::S(J),XS(i)
- Tries
- Try
- S(J);
- Threat
- QAB(A)+R(D),XR(a)
- Vars
- R(a);XQ(A)::R1(D)
- R(a);N_SPINR(g),OGATE,P_PINB(H),P_SPINR(a),XR(D)::QAB1(A),XR(a)
- R(a);::QAB(A)+R(D),DCHECK
- R(a);N_GUARD::QAB(A)+R(D),XR(a)
- Refutation
- S(h);N_SPINR(g)
- Try
- B(H);XP(c)
- Threat
- S(J)
- Vars
- R(a);CHECK,N_SPINR(g),OGATE,P_SPINR(a),XR(D)::QAB1(A),XR(a)
- S(h);N_GUARD::B(I),XR(g)
- Refutation
- S(h);N_SPINR(g)
- Try
- B(H);XS(h)
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,N_SPINR(g),OGATE,P_SPINR(a),XR(D)::QAB1(A),XR(a)
- R(a);::S(J)
- Refutation
- B(j);CHECK,XB(H)
- Try
- B(H);
- Threat
- S(J)
- Vars
- R(a);CHECK,N_SPINR(g),OGATE,P_SPINR(a),XR(D)::QAB1(A),XR(a)
- S(h);N_GUARD::B(I),XR(g)
- Refutation
- S(h);N_SPINR(g)
- Try
- B(H);
- Threat
- S(J)
- Vars
- R(a);CHECK,N_SPINR(g),OGATE,P_SPINR(a),XR(D)::QAB1(A),XR(a)
- S(h);N_GUARD::B(I),XR(g)
- Refutation
- S(h);N_SPINR(g)
- Try
- B(I);CHECK,XR(g)
- Refutation
- S(h);CHECK,XB(I)
- Try
- R(D);CHECK
- Vars
- R(a);XQ(A)::R1(D)
- R(a);N_GUARD,N_SPINR(g),P_PINB(H),P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- K(b);N_SPINR(g),P-FLIGHT,P_SPINR(a),XP(C)
- Try
- R(D);CHECK
- Vars
- R(a);XQ(A)::R1(D)
- R(a);N_GUARD,N_SPINR(g),P_PINB(H),P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- K(b);N_SPINR(g),P-FLIGHT,P_SPINR(a),XP(C)
- Try
- R(D);CHECK
- Vars
- K(b);S_CUTR(a),S_FLIGHT::S(J)
- Refutation
- R(a);XQ(A)
- Try
- R(E);XR(a)
- Threat
- DUALS(4)
- Refutation
- P(d);XR(E)
- Try
- Q(A);
- Threat
- QAR2(A)
- Vars
- R(a);N_SPINR(g),OGATE,P_PINB(H),P_SPINR(a),XR(D)::QAB1(A),XR(a)
- S(h);N_SPINR(g),SBLOCK::QAB(A)+R(D)
- Refutation
- R(a);
- Try
- Q(A);XR(a)
- Threat
- DUALS(3)
- Refutation
- P(d);XQ(A)
- Try
- Actual
- B(H);
- Threat
- S(J)
- Vars
- R(a);CHECK,N_SPINR(g),OGATE,P_SPINR(a),XR(D)::QAB1(A),XR(a)
- S(h);N_SPINR(g),SBLOCK::QAB(A)+R(D),XR(a)
- S(h);N_GUARD::B(I),XR(g)
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