MESON Chess Problem Database

Problem Display
PID: 17406 (1B4q1/b7/3Q1P2/2pN1p2/R2nk3/1NKR1n2/2PP4/4rb2 w - - 0 1)

Hassberg, Eric Manfred

1st Prize, Oakhurst Home News, 1946

1B4q1/b7/3Q1P2/2pN1p2/R2nk3/1NKR1n2/2PP4/4rb2

#2

10 + 9

14773 The Best American Chess Problems of 1946 1948

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qf4#
    • 1...Ra1
      • 2.Re3#
    • 1...Rb1
      • 2.Re3#
    • 1...Rc1
      • 2.Re3#
    • 1...Rd1
      • 2.Re3#
    • 1...Re3
      • 2.Rxe3#
    • 1...Be2
      • 2.Re3#
    • 1...Bxd3
      • 2.cxd3#
    • 1...Bxb8
      • 2.Sxc5#
    • 1...Sg1
      • 2.Qe5#
    • 1...Sxd2
      • 2.Sxd2#
      • 2.Qe5#
    • 1...Sh2
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sg5
      • 2.Qe5#
  • Tries
    • 1.Raxd4+?
      • 1...Sxd4
        • 2.Qe5#
      • 1...cxd4+!
    • 1.Qe6+?
      • 1...Se5
        • 2.Qxe5#
      • 1...Qxe6!
  • Keys
    • 1.Kc4!
      • threat
        • 2.Qf4#
      • 1...Qxd5+
        • 2.Qxd5#
      • 1...Bxd3+
        • 2.cxd3#
      • 1...Sxd2+
        • 2.Sxd2#
      • 1...Se5+
        • 2.Qxe5#
      • 1...Qxb8
        • 2.Sc3#
      • 1...Bxb8
        • 2.Sxc5#
      • 1...f4
        • 2.Qxf4#
      • 1...Qg3
        • 2.Sc3#
      • 1...Qg4
        • 2.Sc3#
      • 1...Qg5
        • 2.Sc3#
      • 1...Se2
        • 2.Re3#
      • 1...Se6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 10
  • Sets
    • Q(i);SBLOCK,XS(G)::QAR1(H)
    • R(a);N_GUARD::R1(E)
    • R(a);N_GUARD,P_PINP(A)::R1(E)
    • R(a);N_GUARD,P_PINR(E)::R1(E),XR(a)
    • B(b);S_CUTR(a)::R1(E)
    • B(b);OGATE,XR(E)::P(A),XB(b)
    • B(h);N_GUARD,XB(J)::S(C),XP(f)
    • S(c);N_GUARD::QAR1(H)
    • S(c);N_GUARD::QAR1(H),XS(c)
  • Tries
    • Try
      • R(F);CHECK,XS(d)
      • Vars
        • S(c);XR(F)::QAR1(H)
      • Refutation
        • P(f);CHECK,XR(F)
    • Try
      • Q(H);CHECK
      • Vars
        • S(c);N_GUARD::QAR1(H),XS(c)
      • Refutation
        • Q(i);XQ(H)
  • Actual
    • K(D);N_PINS(d),P-FLIGHT,P_SPINR(E),P_SPINS(G)
    • Threat
      • QAR1(H)
    • Vars
      • Q(i);CHECK,OGATE,XS(G)::QAB1(H),XQ(i)
      • B(b);CHECK,OGATE,XR(E)::P(A),XB(b)
      • S(c);CHECK,XP(B)::S(C),XS(c)
      • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
      • Q(i);N_PINS(G),XB(J)::S(G)
      • B(h);N_GUARD,XB(J)::S(C),XP(f)
      • P(g);::QAR1(H),XP(g)
      • Q(i);N_PINS(G)::S(G)
      • S(d);N_PINR(E)::R1(E)
      • S(d);N_PINS(G)::S(G)
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