MESON Chess Problem Database

Problem Display
PID: 266485 (8/1p1q1Q2/b3PP2/5kB1/1pr2p1R/1rbP1N2/1pR5/1B5K w - - 0 1)

Soroka, Ivan Ivanovich

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Mat, 1980

8/1p1q1Q2/b3PP2/5kB1/1pr2p1R/1rbP1N2/1pR5/1B5K

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6
      • 2.Qh7#
    • 1...Rc5
      • 2.Rxf4#
    • 1...Rc6
      • 2.Rxf4#
    • 1...Rc7
      • 2.Rxf4#
    • 1...Rc8
      • 2.Rxf4#
    • 1...Bd4
      • 2.Rxf4#
    • 1...Bxf6
      • 2.Qxf6#
  • Keys
    • 1.Re2!
      • threat
        • 2.d4#
      • 1...Qxe6
        • 2.Qh7#
      • 1...Qxd3
        • 2.Qh7#
      • 1...Bxf6
        • 2.Re5#
        • 2.Qxf6#
      • 1...Qc6
        • 2.Qh7#
      • 1...Qd4
        • 2.Qh7#
      • 1...Qd5
        • 2.Qh7#
      • 1...Rd4
        • 2.Re5#
      • 1...Re4
        • 2.dxe4#
      • 1...Rc5
        • 2.Rxf4#
      • 1...Rc6
        • 2.Rxf4#
      • 1...Rc7
        • 2.Rxf4#
      • 1...Rc8
        • 2.Rxf4#
      • 1...Be1
        • 2.Re5#
      • 1...Bd2
        • 2.Re5#
      • 1...Bd4
        • 2.Rxf4#
      • 1...Be5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • Q(j);N_GUARD,SBLOCK,XP(H)::QAB(J)
    • R(e);N_GUARD::R1(F),XP(f)
    • B(c);S_CUTR(e)::R1(F),XP(f)
    • B(c);OGATE,P_SPINB(c),XP(I)::QAR1(J),XB(c)
  • Actual
    • R(C);
    • Threat
      • B(A)+P(D)
    • Vars
      • Q(j);N_GUARD,XP(H)::QAB(J)
      • Q(j);N_GUARD,P_SPINQ(j),XP(D)::QAB(J)
      • Q(j);N_GUARD,P_PINS(E)::QAB(J)
      • Q(j);N_GUARD::QAB(J)
      • R(e);S_CUTB(c)::R1(C)
      • R(e);OGATE::P(D),XR(e)
      • R(e);N_GUARD::R1(F),XP(f)
      • B(c);N_GUARD::R1(C)
      • B(c);S_CUTR(e)::R1(F),XP(f)
      • B(c);N_GUARD::R1(C),XB(c)
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