MESON Chess Problem Database

Problem Display
PID: 46169 (8/3N4/K2bB3/3p3r/4kp1n/1p2P3/1p3R2/3N1Q2 w - - 0 1)

Mikholap, Aleksandr Mikhailovich

The Problemist, 2002

8/3N4/K2bB3/3p3r/4kp1n/1p2P3/1p3R2/3N1Q2

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sf6#
      • 2.Rxf4#
    • 1...Ba3
      • 2.Rxf4#
    • 1...Bb4
      • 2.Rxf4#
    • 1...Bc5
      • 2.Rxf4#
    • 1...Be5
      • 2.Sc5#
    • 1...Be7
      • 2.Rxf4#
    • 1...Bf8
      • 2.Rxf4#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Sc3#
      • 1...fxe3
        • 2.Qxe3#
      • 1...Bb4
        • 2.Rxf4#
      • 1...Be5
        • 2.Sc5#
      • 1...d4
        • 2.exf4#
      • 1...b1S!
    • 1.Qc4+?
      • 1...d4
        • 2.Qxd4#
      • 1...dxc4!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Rd4#
      • 1...fxe3
        • 2.Sc3#
      • 1...Bc5
        • 2.Qxf4#
      • 1...Be5
        • 2.Sc5#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sf5
        • 2.Bxd5#
      • 1...d4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(h);N_GUARD::R1(C),XP(d)
    • B(h);N_GUARD,SBLOCK::S(G)
  • Tries
    • Try
      • Q(B);
      • Threat
        • S(A)
      • Vars
        • P(d);OGATE,P_SPINP(d),XP(D)::QAR1(B),XP(d)
        • B(h);N_GUARD::R1(C),XP(d)
        • B(h);N_GUARD,SBLOCK::S(G)
        • P(f);SBLOCK::QAR(B)+P(D),XP(d)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • P(f);P_SPINP(f)::QAR1(B),XP(f)
      • Refutation
        • P(f);XQ(B)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • P(d);SBLOCK,XP(D)::S(A)
      • B(h);N_GUARD::QAR1(B),XP(d)
      • B(h);N_GUARD,SBLOCK::S(G)
      • S(e);SBLOCK::QAB1(B)
      • S(e);SBLOCK,S_CUTR(g)::B(F),XP(f)
      • P(f);::R1(C),XP(f)
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