MESON Chess Problem Database

Problem Display
PID: 87922 (B7/Kn1p1r2/p2R2Q1/2p1kp2/3rPp2/1pN2p2/1B1N1b2/3b1q2 w - - 0 1)

Erokhin, Vladimir Alekseevich

Uralski Problemist, 1998

B7/Kn1p1r2/p2R2Q1/2p1kp2/3rPp2/1pN2p2/1B1N1b2/3b1q2

#2

8 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sc4#
    • 1...Ra4
      • 2.Rd5#
    • 1...Rb4
      • 2.Rd5#
    • 1...Rc4
      • 2.Rd5#
    • 1...Rxe4
      • 2.Rd5#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Rf6
      • 2.Qxf6#
    • 1...Re7
      • 2.Qf6#
    • 1...Rg7
      • 2.Qf6#
    • 1...Rh7
      • 2.Qf6#
    • 1...Bc2
      • 2.Sxf3#
  • Tries
    • 1.Sc4+?
      • 1...Rxc4
        • 2.Rd5#
      • 1...Qxc4!
    • 1.Sb5?
      • threat
        • 2.Rd5#
      • 1...Sxd6
        • 2.Qxd6#
      • 1...fxe4
        • 2.Qxe4#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Qc4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Rd5#
      • 1...Sxd6
        • 2.Sxf3#
      • 1...fxe4
        • 2.Sc4#
      • 1...Rf6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • R(f);N_GUARD,S_CUTQ(b)::S(B)
    • R(f);N_GUARD::R1(E)
    • R(f);N_GUARD,XP(D)::R1(E)
    • R(f);N_GUARD::R1(E),XR(f)
    • R(n);N_GUARD::QAB1(F),XR(n)
    • R(n);N_GUARD::QAB1(F)
    • B(a);N_GUARD::S(B),XP(e)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • R(f);XS(B)::R1(E)
      • Refutation
        • Q(b);XS(B)
    • Try
      • S(C);P_PINR(f)
      • Threat
        • R1(E)
      • Vars
        • S(l);OGATE,XR(E)::QAB1(F),XS(l)
        • P(j);OGATE,XP(D)::QAR1(F),XP(j)
        • R(n);N_GUARD::QAB1(F),XR(n)
      • Refutation
        • Q(b);
  • Actual
    • S(C);P_PINR(f)
    • Threat
      • R1(E)
    • Vars
      • S(l);XR(E)::S(B),XP(e)
      • P(j);XP(D)::S(B)
      • R(n);N_GUARD::QAB1(F),XR(n)
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