MESON Chess Problem Database

Problem Display
PID: 108102 (6n1/3ppQ2/Kbk2pB1/p2R2N1/2rp1Bb1/n2N4/2R5/8 w - - 0 1)

Gamza, Grigory Stepanovich

Slovensky Dennik, 1992

6n1/3ppQ2/Kbk2pB1/p2R2N1/2rp1Bb1/n2N4/2R5/8

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Sb4#
    • 1...e6
      • 2.Qxd7#
  • Tries
    • 1.Be4?
      • threat
        • 2.Rc5#
      • 1...e5
        • 2.Rxd7#
      • 1...Rc5
        • 2.Rdxc5#
      • 1...Bc5
        • 2.Rxc5#
      • 1...d6!
    • 1.Rxc4+?
      • 1...Bc5
        • 2.Rcxc5#
        • 2.Rdxc5#
      • 1...Sxc4!
  • Keys
    • 1.Rxd7!
      • threat
        • 2.Qd5#
      • 1...Kxd7
        • 2.Qe8#
      • 1...Bxd7
        • 2.Be4#
      • 1...Bf3
        • 2.Qe6#
      • 1...Be6
        • 2.Qxe6#
      • 1...e6
        • 2.Be4#
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • P(e);N_GUARD::S(B)
    • P(j);OGATE::QAB1(H),XP(i)
  • Tries
    • Try
      • B(G);
      • Threat
        • B(G)+R(D),DCHECK
      • Vars
        • P(j);::B(G)+R(D),XP(i)
        • R(b);::B(G)+R(D),DCHECK,XR(b)
        • B(f);N_SPINR(b)::B(G)+R(D),DCHECK,XB(f)
      • Refutation
        • P(i);
    • Try
      • R(A);CHECK,XR(b)
      • Refutation
        • S(a);XR(A)
  • Actual
    • R(D);XP(i)
    • Threat
      • QAB1(H)
    • Vars
      • K(g);N_SPINR(b),OGATEB,P_SPINP(j),S_FLIGHT,XR(D)::QAB1(H)
      • B(d);SBLOCK,XR(D)::B(G)
      • B(d);N_GUARD::QAR2(H)
      • B(d);N_GUARD::QAR2(H),XB(d)
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