MESON Chess Problem Database

Problem Display
PID: 241126 (2N2B2/1BNprn2/P7/ppkb3r/6Q1/P3R1p1/4R2b/4K3 w - - 0 1)

Erokhin, Vladimir Alekseevich

Shakhmaty (Riga), 1973

2N2B2/1BNprn2/P7/ppkb3r/6Q1/P3R1p1/4R2b/4K3

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Rc2#
      • 2.Rc3#
    • 1...Bg2
      • 2.Rc2#
      • 2.Rc3#
    • 1...Bf3
      • 2.Rc2#
      • 2.Rc3#
    • 1...Bc6
      • 2.Rc2#
      • 2.Rc3#
    • 1...Bxb7
      • 2.Rc2#
      • 2.Rc3#
    • 1...a4
      • 2.Qb4#
  • Tries
    • 1.Bxe7+?
      • 1...Sd6
        • 2.Bxd6#
      • 1...d6!
    • 1.Rd3?
      • threat
        • 2.Qd4#
      • 1...Bxb7
        • 2.Rc3#
      • 1...Be4
        • 2.Rc2#
      • 1...Rh4
        • 2.Rxd5#
      • 1...Bg1!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Qd4#
      • 1...Bxb7
        • 2.Rc2#
      • 1...Be4
        • 2.Rc3#
      • 1...Rh4
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::QAB1(E)
  • Tries
    • Try
      • B(J);CHECK,XR(i)
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::B(J),XS(j)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • R(D);P_SPINR(B)
      • Threat
        • QAB1(E)
      • Vars
        • B(f);N_GUARD,XB(G)::R(D)
        • B(f);N_PINR(B)::R(B)
        • R(g);N_GUARD::R1(D),XB(f)
      • Refutation
        • B(a);
  • Actual
    • R(B);P_SPINR(D)
    • Threat
      • QAB1(E)
    • Vars
      • B(f);N_GUARD,XB(G)::R(B)
      • B(f);N_PINR(D)::R(D)
      • R(g);N_GUARD::R1(B),XB(f)
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