MESON Chess Problem Database

Problem Display
PID: 29676 (1K4nq/2pRb1n1/2PP1p1p/PP1Nr1Rr/3k1pN1/1Q3P2/4P3/8 w - - 0 1)

Storozhenko, Ivan Ivanovich

4th HM., Barulin-100 MT, 1999

1K4nq/2pRb1n1/2PP1p1p/PP1Nr1Rr/3k1pN1/1Q3P2/4P3/8

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Qc3#
    • 1...Re3
      • 2.Qb4#
    • 1...Re4
      • 2.Qc3#
      • 2.Qb4#
    • 1...Rxd5
      • 2.Qb4#
    • 1...Re6
      • 2.Qc3#
      • 2.Qb4#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qc4#
        • 2.Qb4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Rxe2
        • 2.Qc4#
        • 2.dxe7#
      • 1...Rxb5
        • 2.Qc4#
        • 2.Qd3#
      • 1...Rc5
        • 2.Qd3#
      • 1...cxb6!
    • 1.dxc7?
      • threat
        • 2.Qc3#
      • 1...Kc5
        • 2.Qb4#
      • 1...Rxd5
        • 2.Rdxd5#
      • 1...Re3
        • 2.Sxe7#
      • 1...Bb4
        • 2.Qxb4#
      • 1...Bd6!
    • 1.dxe7?
      • threat
        • 2.Qc3#
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Rxe2
        • 2.Sc3#
        • 2.Sde3#
        • 2.Sb4#
        • 2.Sxf4#
        • 2.Sb6#
        • 2.Sdxf6#
        • 2.Sxc7#
        • 2.Qc3#
      • 1...Rxd5
        • 2.Rdxd5#
        • 2.Qb4#
      • 1...Re3
        • 2.Sc3#
        • 2.Sdxe3#
        • 2.Sb4#
        • 2.Sxf4#
        • 2.Sb6#
        • 2.Sdxf6#
        • 2.Sxc7#
        • 2.Qb4#
      • 1...Sxe7+!
  • Keys
    • 1.Sxc7!
      • threat
        • 2.Qb4#
      • 1...Rxb5+
        • 2.Sxb5#
      • 1...Kc5
        • 2.Qc3#
      • 1...Rxe2
        • 2.dxe7#
      • 1...Rc5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);XP(A)::QAB1(B)
    • R(c);::QAR2(B)
    • R(c);XS(G)::QAR2(B)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P_SPINR(c),S_FLIGHT::QAR1(B)
        • R(c);::QAR1(B)
      • Refutation
        • P(g);XS(G)
    • Try
      • P(J);XP(g)
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • R(c);OGATE,P_SPINR(c),XS(G)::R1(K),XR(c)
        • R(c);N_GUARD::R(K)+S(G),XB(h)
        • B(h);N_GUARD::QAR2(B),XB(h)
      • Refutation
        • B(h);P_PINP(J)
    • Try
      • P(J);XB(h)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • S(j);CHECK,XP(J)
  • Actual
    • S(G);XP(g)
    • Threat
      • QAR2(B)
    • Vars
      • R(c);CHECK,XP(F)::S(G),XR(c)
      • K(a);P_SPINR(c),S_FLIGHT::QAR2(B)
      • R(c);N_GUARD,XP(A)::R(K)+P(J),XB(h)
      • R(c);::QAR1(B)
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