MESON Chess Problem Database

Problem Display
PID: 173061 (5R2/Q1pN4/2K3b1/6rR/1p2kp2/2b1pNpn/4B3/B4r2 w - - 0 1)

Barulin, Mikhail Mikhailovich

2nd Prize, Zadachi i Etyudi, 1928

5R2/Q1pN4/2K3b1/6rR/1p2kp2/2b1pNpn/4B3/B4r2

#2

8 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.Sc5#
    • 1...Rc5+
      • 2.Sxc5#
    • 1...Re5
      • 2.Sf6#
    • 1...Be1
      • 2.Qd4#
    • 1...Bd2
      • 2.Qd4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Be5
      • 2.Sc5#
    • 1...Bf5
      • 2.Sc5#
    • 1...Sg1
      • 2.Sxg5#
    • 1...Sf2
      • 2.Sxg5#
  • Tries
    • 1.Sd2+?
      • 1...Bxd2
        • 2.Qd4#
      • 1...exd2!
  • Keys
    • 1.Sfe5!
      • threat
        • 2.Bd3#
      • 1...Rxe5
        • 2.Sf6#
      • 1...Bxe5
        • 2.Sc5#
      • 1...Rd1
        • 2.Bf3#
      • 1...Sf2
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(i);N_GUARD::S(G)
    • R(i);CHECK,N_GUARD::S(G),XR(i)
    • R(i);S_CUTB(b)::S(G)
    • B(b);N_GUARD::QAR1(F)
    • B(b);N_GUARD::QAR1(F),XB(b)
    • B(b);S_CUTR(i)::S(G)
    • B(j);S_CUTR(i)::S(G)
    • S(e);N_GUARD::S(C),XR(i)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • B(b);XS(C)::QAR1(F)
      • Refutation
        • P(c);XS(C)
  • Actual
    • S(C);
    • Threat
      • B(B)
    • Vars
      • R(i);XS(C)::S(G)
      • B(b);XS(C)::S(G)
      • R(a);N_GUARD::B(B)
      • S(e);S_CUTR(a)::B(B)
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