MESON Chess Problem Database

Problem Display
PID: 99856 (4r3/b1Q1p3/2p1k1Pn/1pr5/7B/1PP3PK/4B3/3R1R2 w - - 0 1)

Nagnibida, Mykola Ivanovich

Magyar Sakkelet, 1984

4r3/b1Q1p3/2p1k1Pn/1pr5/7B/1PP3PK/4B3/3R1R2

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qxc6#
      • 2.Qd7#
    • 1...Ra8
      • 2.Qxe7#
    • 1...Rb8
      • 2.Qxe7#
    • 1...Rc8
      • 2.Qxe7#
    • 1...Rd8
      • 2.Qxe7#
    • 1...Rf8
      • 2.Qxe7#
    • 1...Rg8
      • 2.Qxe7#
    • 1...Rh8
      • 2.Qxe7#
  • Tries
    • 1.Rfe1?
      • threat
        • 2.Bg4#
      • 1...Kf5
        • 2.Bd3#
      • 1...Re5
        • 2.Qd7#
      • 1...Rf5
        • 2.Bc4#
      • 1...Sg4
        • 2.Bxg4#
      • 1...Sf5
        • 2.Bc4#
      • 1...Rg5!
  • Keys
    • 1.Rde1!
      • threat
        • 2.Bc4#
      • 1...Kd5
        • 2.Bf3#
      • 1...Rc4
        • 2.Bxc4#
      • 1...Rd5
        • 2.Bg4#
      • 1...Re5
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD::QAR1(J),XP(g)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)+B(C),DCHECK
      • Vars
        • K(d);S_FLIGHT::B(C)
        • R(b);SBLOCK::QAB1(J)
        • R(b);SBLOCK::R(B)+B(C),DCHECK
        • S(e);::R(B)+B(C),DCHECK,XS(e)
        • S(e);SBLOCK::R(B)+B(C),DCHECK
      • Refutation
        • R(b);
  • Actual
    • R(A);
    • Threat
      • R(A)+B(C),DCHECK
    • Vars
      • K(d);S_FLIGHT::B(C)
      • R(b);::R(A)+B(C),DCHECK,XR(b)
      • R(b);SBLOCK::R(A)+B(C),DCHECK
      • R(b);N_GUARD,SBLOCK::QAR2(J),XP(c)
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