MESON Chess Problem Database

Problem Display
PID: 254542 (B7/qrB3R1/N1k5/3p4/P1n3p1/pN6/P1nbP3/1KR4Q w - - 0 1)

Storm, Fredrik

Wiener Schachzeitung, 1937

B7/qrB3R1/N1k5/3p4/P1n3p1/pN6/P1nbP3/1KR4Q

#2

11 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sb8#
    • 1...Qf2
      • 2.Sb8#
    • 1...Qe3
      • 2.Sb8#
    • 1...Qd4
      • 2.Sb8#
    • 1...Qc5
      • 2.Sb8#
    • 1...Qb6
      • 2.Sb8#
    • 1...Qb8
      • 2.Sxb8#
    • 1...S2e3
      • 2.Qh6#
    • 1...Sb4
      • 2.Sa5#
    • 1...S4e3
      • 2.Qh6#
    • 1...Sb6
      • 2.Sd4#
  • Tries
    • 1.Rg6+?
      • 1...Sd6
        • 2.Rxd6#
      • 1...Kd7!
    • 1.Rd7?
      • threat
        • 2.Qxd5#
      • 1...Qd4
        • 2.Sb8#
      • 1...Qc5
        • 2.Sb8#
      • 1...S2e3
        • 2.Rd6#
      • 1...Sb4
        • 2.Rd6#
      • 1...S4e3
        • 2.Rd6#
      • 1...Sb6
        • 2.Rd6#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Kxd7!
    • 1.Qh6+?
      • 1...Sd6
        • 2.Qxd6#
      • 1...Bxh6!
  • Keys
    • 1.e4!
      • threat
        • 2.exd5#
      • 1...dxe4
        • 2.Qxe4#
      • 1...Qd4
        • 2.Sb8#
      • 1...Qc5
        • 2.Sb8#
      • 1...S2e3
        • 2.Qh6#
      • 1...Sb4
        • 2.Sa5#
      • 1...S4e3
        • 2.Qh6#
      • 1...Sb6
        • 2.Sd4#
      • 1...d4
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(h);N_GUARD,P_PINR(B)::S(H)
    • Q(h);N_GUARD::S(H)
    • Q(h);N_GUARD::S(H),XQ(h)
    • S(a);P_SPINS(d),S_CUTB(b)::QAR(C)
    • S(a);N_PINS(F),P_SPINS(d)::S(F)
    • S(d);N_GUARD,P_SPINS(a),S_CUTB(b)::QAR(C)
    • S(d);N_PINS(F),P_SPINS(a)::S(F)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(a)::R1(J),XS(d)
      • Refutation
        • K(g);N_SPINP(f),N_SPINR(i),S_FLIGHT
    • Try
      • R(J);
      • Threat
        • QAB1(C),XP(f)
      • Vars
        • Q(h);N_GUARD::S(H)
        • S(a);P_SPINS(d)::R1(J)
        • S(a);N_PINS(F),P_SPINS(d)::R1(J)
        • S(d);N_GUARD,P_SPINS(a)::R1(J)
        • S(d);N_GUARD,N_PINS(F),P_SPINS(a)::R1(J)
        • S(d);N_GUARD,P_SPINS(a)::R1(J),XS(d)
      • Refutation
        • K(g);N_SPINP(f),N_SPINR(i),S_FLIGHT,XR(J)
    • Try
      • Q(C);CHECK,N_PINP(f)
      • Vars
        • S(d);N_GUARD,P_SPINS(a)::QAR1(C),XS(d)
      • Refutation
        • B(b);XQ(C)
  • Actual
    • P(E);N_PINP(f)
    • Threat
      • P(E),XP(f)
    • Vars
      • P(f);OGATE,P_SPINP(f),XP(E)::QAB(C),XP(f)
      • Q(h);N_GUARD::S(H)
      • S(a);P_SPINS(d),S_CUTB(b)::QAR(C)
      • S(a);N_PINS(F),P_SPINS(d)::S(F)
      • S(d);N_GUARD,P_SPINS(a),S_CUTB(b)::QAR(C)
      • S(d);N_PINS(F),P_SPINS(a)::S(F)
      • P(f);::QAB(C)+P(E)
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