MESON Chess Problem Database

Problem Display
PID: 245305 (6r1/3B2p1/5P2/4kN2/2P3R1/1b2pP2/qr1R1BK1/Q7 w - - 0 1)

Onkoud, Abdelaziz

Problemas, 1998

6r1/3B2p1/5P2/4kN2/2P3R1/1b2pP2/qr1R1BK1/Q7

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Qxb2#
    • 1...Qa6
      • 2.Qxb2#
    • 1...Qa8
      • 2.Qxb2#
    • 1...exd2
      • 2.Bd4#
    • 1...e2
      • 2.Bd4#
    • 1...gxf6
      • 2.Bg3#
      • 2.Rd5#
  • Tries
    • 1.Bh4?
      • threat
        • 2.Re4#
      • 1...gxf6
        • 2.Bg3#
      • 1...Qb1
        • 2.Qa5#
      • 1...Qa8
        • 2.Qxb2#
      • 1...Bc2
        • 2.Rd5#
      • 1...g5!
    • 1.Rg6?
      • threat
        • 2.Bg3#
      • 1...Kf4
        • 2.Bg3#
      • 1...exf2!
    • 1.f4+?
      • 1...Ke4
        • 2.Sg3#
        • 2.Sd6#
        • 2.Rd4#
      • 1...Kxf6!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Re4#
      • 1...gxf6
        • 2.Rd5#
      • 1...Qb1
        • 2.Qa5#
      • 1...Qa8
        • 2.Qxb2#
      • 1...Bc2
        • 2.Bg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::QAB(A),XR(b)
    • Q(a);N_GUARD,P_PINP(E)::QAB(A),XR(b)
    • P(d);OGATE,XR(B)::B(C)
    • P(d);OGATE::B(C)
  • Tries
    • Try
      • B(C);P_SPINR(B)
      • Threat
        • R1(G)
      • Vars
        • P(f);SBLOCK,XP(I)::B(C)
        • Q(a);OGATE::QAR(A)
        • Q(a);N_GUARD,P_PINP(E)::QAB(A),XR(b)
        • B(c);N_PINR(B)::R1(B)
      • Refutation
        • P(f);
    • Try
      • R(G);
      • Threat
        • B(C)
      • Vars
        • K(e);N_SPINR(b),S_FLIGHT::B(C)
      • Refutation
        • P(d);XB(C)
    • Try
      • P(E);CHECK
      • Refutation
        • K(e);S_FLIGHT,XP(I)
  • Actual
    • R(B);P_SPINB(C)
    • Threat
      • R1(G)
    • Vars
      • P(f);P_PINR(G),SBLOCK,XP(I)::R1(B)
      • Q(a);OGATE::QAR(A)
      • Q(a);N_GUARD,P_PINP(E)::QAB(A),XR(b)
      • B(c);N_PINB(C)::B(C)
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