MESON Chess Problem Database

Problem Display
PID: 243722 (4R3/2Kp3B/1Qnp1p2/2pk1n1R/1P1b1rN1/1P1pqP2/2N5/6r1 w - - 0 1)

Beck, Friedrich

Nepszava, 1939

4R3/2Kp3B/1Qnp1p2/2pk1n1R/1P1b1rN1/1P1pqP2/2N5/6r1

#2

10 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Bg8#
    • 1...Qd2
      • 2.Bg8#
    • 1...Qf2
      • 2.Bg8#
    • 1...Qxf3
      • 2.Bg8#
    • 1...Ba1
      • 2.Sgxe3#
    • 1...Bb2
      • 2.Sgxe3#
    • 1...Bc3
      • 2.Sgxe3#
    • 1...Be5
      • 2.Bg8#
    • 1...Sxb4
      • 2.Qxd6#
    • 1...Sa5
      • 2.Qxd6#
    • 1...Se5
      • 2.Sxf6#
    • 1...Sa7
      • 2.Qxd6#
    • 1...Se7
      • 2.Qxd6#
    • 1...Sb8
      • 2.Qxd6#
    • 1...Sd8
      • 2.Qxd6#
  • Tries
    • 1.Rxf5+?
      • 1...Qe5
        • 2.Sxf6#
        • 2.Bg8#
      • 1...Be5
        • 2.Sgxe3#
        • 2.Sxf6#
        • 2.Bg8#
      • 1...Se5
        • 2.Sxf6#
        • 2.Bg8#
        • 2.Qxd6#
        • 2.Qb7#
      • 1...Rxf5!
    • 1.Qxc5+?
      • 1...Bxc5
        • 2.Sxf6#
      • 1...dxc5!
    • 1.Qb5?
      • threat
        • 2.Qc4#
      • 1...Ba1
        • 2.Sgxe3#
      • 1...Bb2
        • 2.Sgxe3#
      • 1...Bc3
        • 2.Sgxe3#
      • 1...Be5
        • 2.Bg8#
      • 1...Se5
        • 2.Sxf6#
      • 1...Sa5!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qc4#
      • 1...Ba1
        • 2.Sgxe3#
      • 1...Bb2
        • 2.Sgxe3#
      • 1...Bc3
        • 2.Sgxe3#
      • 1...Be5
        • 2.Bg8#
      • 1...Sa5
        • 2.Qxd6#
      • 1...Se5
        • 2.Sxf6#
      • 1...c4
        • 2.Qxc4#
        • 2.bxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::B(I)
    • Q(c);N_GUARD,XP(C)::B(I)
    • B(d);N_GUARD::S(E),XQ(c)
    • B(d);N_SPINS(h),S_CUTQ(c)::B(I)
    • S(i);OGATE,XP(D)::QAR1(G),XP(j)
    • S(i);OGATE::QAR1(G),XP(j)
    • S(i);N_SPINS(h),S_CUTB(d)::S(E),XP(k)
  • Tries
    • Try
      • R(F);CHECK,XS(h)
      • Refutation
        • R(e);XR(F)
    • Try
      • Q(G);CHECK,XP(f)
      • Vars
        • B(d);XQ(G)::S(E),XP(k)
      • Refutation
        • P(j);XQ(G)
    • Try
      • Q(G);P_PINP(f)
      • Threat
        • QAB1(G)
      • Vars
        • B(d);N_GUARD::S(E),XQ(c)
        • B(d);N_SPINS(h),S_CUTQ(c)::B(I)
        • S(i);N_SPINS(h),S_CUTB(d)::S(E),XP(k)
      • Refutation
        • S(i);
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • B(d);N_GUARD::S(E),XQ(c)
      • B(d);N_SPINS(h),S_CUTQ(c)::B(I)
      • S(i);OGATE::QAR1(G),XP(j)
      • S(i);N_SPINS(h),S_CUTB(d)::S(E),XP(k)
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