MESON Chess Problem Database

Problem Display
PID: 256461 (6R1/7p/4N1P1/R2q1kN1/3Q2p1/7r/b1Pn1r2/2BKbB2 w - - 0 1)

Lindeberg, FM

Schackvarlden, 1933

6R1/7p/4N1P1/R2q1kN1/3Q2p1/7r/b1Pn1r2/2BKbB2

#2

10 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qxe5#
    • 1...Re2
      • 2.Qf4#
    • 1...Rg2
      • 2.Qf4#
    • 1...Rfh2
      • 2.Qf4#
    • 1...Rf4
      • 2.Qxf4#
    • 1...Rb3
      • 2.Rxd5#
    • 1...Bb1
      • 2.Rxd5#
    • 1...Sb3
      • 2.Rxd5#
    • 1...Sf3
      • 2.Bd3#
    • 1...g3
      • 2.Bxh3#
    • 1...hxg6
      • 2.Rf8#
  • Tries
    • 1.Bd3+?
      • 1...Se4
        • 2.Bxe4#
      • 1...Rxd3!
    • 1.Qxd5+?
      • 1...Kf6
        • 2.Qd8#
      • 1...Bxd5!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Rf8#
      • 1...Sb1+
        • 2.Sd4#
      • 1...Sxf1+
        • 2.Sd4#
      • 1...Sb3+
        • 2.Rxd5#
      • 1...Sf3+
        • 2.Bd3#
      • 1...Sc4+
        • 2.Sd4#
      • 1...Se4+
        • 2.Sd4#
      • 1...g3
        • 2.Bxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • Q(g);N_GUARD::QAR1(E),XQ(g)
    • R(d);N_GUARD::QAR1(E)
    • R(d);N_GUARD::QAR1(E),XR(d)
    • R(e);S_CUTB(b)::R(F),XQ(g)
    • B(b);N_GUARD::R(F),XQ(g)
    • S(c);P_PINQ(E),S_CUTB(b)::R(F),XQ(g)
    • S(c);N_GUARD,P_PINQ(E),S_CUTR(e)::B(C)
    • P(f);OGATEB::B(C),XR(e)
    • P(i);SBLOCK,XP(I)::R(J)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::B(C),XS(c)
      • Refutation
        • R(e);XB(C)
    • Try
      • Q(E);CHECK,XQ(g)
      • Vars
        • K(h);P-FLIGHT,S_CUTB(b)::QAB(E)
      • Refutation
        • B(b);P_SPINB(b),XQ(E)
  • Actual
    • Q(E);
    • Threat
      • R(J)
    • Vars
      • S(c);CHECK::S(H)
      • S(c);CHECK,XB(C)::S(H)
      • S(c);CHECK,S_CUTB(b)::R(F),XQ(g)
      • S(c);CHECK,N_GUARD,S_CUTR(e)::B(C)
      • P(f);OGATEB::B(C),XR(e)
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