MESON Chess Problem Database

Problem Display
PID: 233774 (4rrn1/1pBB4/8/1R4p1/2p1k1N1/1NP5/Q3P3/1K1b1nb1 w - - 0 1)

Sambuu, Sukhebaatarin

Freie Presse, 1975

4rrn1/1pBB4/8/1R4p1/2p1k1N1/1NP5/Q3P3/1K1b1nb1

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Bxf5#
    • 1...Bc2+
      • 2.Qxc2#
    • 1...Sd2+
      • 2.Sxd2#
    • 1...Sh2
      • 2.Sd2#
    • 1...Se3
      • 2.Sd2#
    • 1...Sg3
      • 2.Sd2#
    • 1...Sf6
      • 2.Bf5#
    • 1...b6
      • 2.Bc6#
  • Tries
    • 1.Re5+?
      • 1...Kf4
        • 2.Re7#
        • 2.Rxe8#
      • 1...Rxe5!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd5#
      • 1...Bc2+
        • 2.Qxc2#
      • 1...Sxd2+
        • 2.Sxd2#
      • 1...Re5
        • 2.Rxe5#
      • 1...Rf5
        • 2.Bxf5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Se3
        • 2.Sc5#
        • 2.Qd4#
      • 1...Sf6
        • 2.Bf5#
      • 1...Se7
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(i);N_GUARD::B(I),XR(i)
    • B(a);CHECK,N_GUARD::QAB(B),XB(a)
    • S(b);CHECK,N_GUARD::S(D),XS(b)
    • S(b);N_GUARD::S(D)
    • S(j);S_CUTR(i)::B(I)
    • P(g);N_GUARD::B(I)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • R(h);XR(G)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • B(a);CHECK,N_GUARD::QAB(B),XB(a)
      • S(b);CHECK,XQ(B)::S(D),XS(b)
      • R(h);N_GUARD::R1(G),XR(h)
      • R(i);N_GUARD::B(I),XR(i)
      • B(c);N_GUARD::QAR1(B),XB(c)
      • B(c);N_GUARD::S(D),XB(c)
      • S(j);S_CUTR(i)::B(I)
      • S(j);S_CUTR(h)::R1(G)
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