MESON Chess Problem Database

Problem Display
PID: 83592 (4r3/2Qr1P1P/8/1p2pBRp/Rbn2k1K/5P2/5B2/6Nb w - - 0 1)

Ellerman, Arnoldo

Tijdschrift vd NSB, 1923

4r3/2Qr1P1P/8/1p2pBRp/Rbn2k1K/5P2/5B2/6Nb

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf3
      • 2.Sh3#
    • 1...Se3
      • 2.Bg3#
    • 1...Sd6
      • 2.Qc1#
  • Tries
    • 1.Bb1?
      • threat
        • 2.Rf5#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Be7
        • 2.Qxe5#
      • 1...Se3
        • 2.Bg3#
      • 1...Sd6
        • 2.Qc1#
      • 1...Rd3!
    • 1.Bd3?
      • threat
        • 2.Rf5#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Be7
        • 2.Qxe5#
      • 1...Se3
        • 2.Bg3#
      • 1...Sd6
        • 2.Qc1#
      • 1...Rxd3!
    • 1.Bh3?
      • threat
        • 2.Rf5#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Be7
        • 2.Qxe5#
      • 1...Se3
        • 2.Bg3#
      • 1...Sd6
        • 2.Qc1#
      • 1...Bxf3!
    • 1.Be4?
      • threat
        • 2.Se2#
        • 2.Sh3#
        • 2.Rf5#
      • 1...Rxf7
        • 2.Se2#
        • 2.Sh3#
        • 2.Qxf7#
      • 1...Rd2
        • 2.Sh3#
        • 2.Rf5#
      • 1...Bg2
        • 2.Se2#
        • 2.Rf5#
      • 1...Be7
        • 2.Se2#
        • 2.Sh3#
      • 1...Se3
        • 2.Se2#
        • 2.Sh3#
        • 2.Bg3#
      • 1...Sd6
        • 2.Se2#
        • 2.Sh3#
      • 1...Bxf3!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Rf5#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Bxf3
        • 2.Sh3#
      • 1...Be7
        • 2.Qxe5#
      • 1...Se3
        • 2.Bg3#
      • 1...Sd6
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK,XP(C)::S(A)
    • S(c);P_SPINB(b),SBLOCK::B(B)
    • S(c);N_SPINP(f),OGATE,P_SPINB(b)::QAB(H)
  • Tries
    • Try
      • B(F);
      • Threat
        • R1(G)
      • Vars
        • R(h);OGATE,XP(I)::QAR(H),XR(h)
        • B(b);P_PINR(G),P_SPINS(c),S_CUTR(i)::QAB1(H),XP(f)
        • S(c);P_SPINB(b),SBLOCK::B(B)
        • S(c);N_SPINP(f),OGATE,P_SPINB(b)::QAB(H)
      • Refutation
        • R(h);
    • Try
      • B(F);
      • Threat
        • R1(G)
      • Vars
        • R(h);OGATE,XP(I)::QAR(H),XR(h)
        • B(b);P_PINR(G),P_SPINS(c),S_CUTR(i)::QAB1(H),XP(f)
        • S(c);P_SPINB(b),SBLOCK::B(B)
        • S(c);N_SPINP(f),OGATE,P_SPINB(b)::QAB(H)
      • Refutation
        • R(h);XB(F)
    • Try
      • B(F);
      • Threat
        • R1(G)
      • Vars
        • R(h);OGATE,XP(I)::QAR(H),XR(h)
        • B(b);P_PINR(G),P_SPINS(c),S_CUTR(i)::QAB1(H),XP(f)
        • S(c);P_SPINB(b),SBLOCK::B(B)
        • S(c);N_SPINP(f),OGATE,P_SPINB(b)::QAB(H)
      • Refutation
        • B(a);XP(C)
    • Try
      • B(F);
      • Threat
        • DUALS(3)
      • Refutation
        • B(a);XP(C)
  • Actual
    • B(F);
    • Threat
      • R1(G)
    • Vars
      • R(h);OGATE,XP(I)::QAR(H),XR(h)
      • B(a);SBLOCK,XP(C)::S(A)
      • B(b);P_PINR(G),P_SPINS(c),S_CUTR(i)::QAB1(H),XP(f)
      • S(c);P_SPINB(b),SBLOCK::B(B)
      • S(c);N_SPINP(f),OGATE,P_SPINB(b)::QAB(H)
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