MESON Chess Problem Database

Problem Display
PID: 87547 (3K3B/2nR4/4k3/2Pr4/2r4n/3Q4/B6b/8 w - - 0 1)

Ivanov, Albert Fedorovich

Uralski Problemist, 1999

3K3B/2nR4/4k3/2Pr4/2r4n/3Q4/B6b/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Re7#
    • 1...Re5
      • 2.Re7#
    • 1...Rf5
      • 2.Re7#
    • 1...Rg5
      • 2.Re7#
    • 1...Rh5
      • 2.Re7#
    • 1...Rxd7+
      • 2.Qxd7#
    • 1...Sg2
      • 2.Qg6#
    • 1...Sf3
      • 2.Qg6#
    • 1...Sg6
      • 2.Qxg6#
    • 1...Sb5
      • 2.Qxd5#
    • 1...Sa6
      • 2.Qxd5#
    • 1...Sa8
      • 2.Qxd5#
    • 1...Se8
      • 2.Qxd5#
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qf7#
      • 1...Rxd7+
        • 2.Qxd7#
      • 1...Rf4
        • 2.Rd6#
      • 1...Rf5
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • R(d);N_PINR(D),P_SPINR(b),XP(C)::R1(D)
    • R(d);N_PINR(D),P_SPINR(b)::R1(D)
    • R(d);CHECK,OGATE,P_SPINR(b),XR(D)::QAB1(B),XR(d)
    • S(c);N_GUARD::QAR2(B)
    • S(c);N_GUARD::QAR2(B),XS(c)
    • S(f);N_GUARD::QAB1(B),XR(d)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • R(d);CHECK,OGATE,P_SPINR(b),XR(D)::QAB1(B),XR(d)
      • R(b);P_SPINR(d),S_CUTB(a)::R1(D)
      • R(d);N_PINR(D),P_SPINR(b),SBLOCK::QAR1(B)
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