MESON Chess Problem Database

Problem Display
PID: 231501 (8/1nK5/8/3kp1Nn/1B1r1pN1/5p2/b2R4/2R2B2 w - - 0 1)

Hochberger, Alfred

Nepszava, 1927

8/1nK5/8/3kp1Nn/1B1r1pN1/5p2/b2R4/2R2B2

#2

7 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Rxd3#
    • 1...Bb1
      • 2.Bc4#
    • 1...Bc4
      • 2.Bxc4#
    • 1...Sg3
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sg7
      • 2.Sf6#
    • 1...Sa5
      • 2.Rc5#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Sd6
      • 2.Rc5#
    • 1...Sd8
      • 2.Rc5#
  • Tries
    • 1.Bb5?
      • threat
        • 2.Bc6#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Sa5
        • 2.Rc5#
      • 1...Sd8
        • 2.Rc5#
      • 1...Rxd2!
    • 1.Ba6?
      • threat
        • 2.Bxb7#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Sa5
        • 2.Rc5#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sd6
        • 2.Rc5#
      • 1...Sd8
        • 2.Rc5#
      • 1...Rxd2!
    • 1.Rxd4+?
      • 1...Kxd4
        • 2.Rd1#
      • 1...exd4!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Be4#
      • 1...Rc4+
        • 2.Bxc4#
      • 1...Rxd3
        • 2.Rxd3#
      • 1...Re4
        • 2.Bc4#
        • 2.Bxe4#
      • 1...Bb1
        • 2.Bc4#
      • 1...Sg3
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sd6
        • 2.Rc5#
      • 1...e4
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(c);OGATEB::R(C),XR(c)
    • B(a);N_GUARD::B(B)
    • B(a);N_GUARD::B(B),XB(a)
    • S(g);N_GUARD::S(E)
    • S(g);N_GUARD::S(E),XS(g)
    • S(h);N_GUARD::R1(A)
    • S(h);N_GUARD::R1(A),XS(h)
  • Tries
    • Try
      • B(B);
      • Threat
        • B(B)
      • Vars
        • R(c);OGATEB::R(C),XR(c)
        • S(h);N_GUARD::R1(A)
      • Refutation
        • R(c);N_SPINR(c),XR(C)
    • Try
      • B(B);
      • Threat
        • B(B),XS(h)
      • Vars
        • R(c);OGATEB::R(C),XR(c)
        • S(h);N_GUARD::R1(A)
        • S(h);N_GUARD::R1(A),XS(h)
      • Refutation
        • R(c);N_SPINR(c),XR(C)
    • Try
      • R(C);CHECK,XR(c)
      • Vars
        • K(e);P-FLIGHT,XR(C)::R(A)
      • Refutation
        • P(f);XR(C)
  • Actual
    • B(B);N_PINR(c)
    • Threat
      • B(B)
    • Vars
      • R(c);CHECK::R(C)+B(B),DCHECK,XR(c)
      • R(c);OGATE,P_SPINR(c),XB(B)::R(C),XR(c)
      • B(a);N_GUARD::B(B)
      • S(g);N_GUARD::S(E)
      • S(g);N_GUARD::S(E),XS(g)
      • S(h);N_GUARD::R1(A),XS(h)
      • S(h);N_GUARD::R1(A)
      • P(f);::B(B),XP(f)
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