MESON Chess Problem Database

Problem Display
PID: 90293 (8/8/8/5p2/1p3p2/pp3Qp1/bbk3K1/rRnR1N2 w - - 0 1)

Olasz, Imre

HM., Die Schwalbe, 1929

8/8/8/5p2/1p3p2/pp3Qp1/bbk3K1/rRnR1N2

#2

5 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb1
      • 2.Qd3#
    • 1...Rxb1
      • 2.Rd2#
    • 1...Bxb1
      • 2.Rd2#
    • 1...Bc3
      • 2.Rdxc1#
    • 1...Bd4
      • 2.Rdxc1#
    • 1...Be5
      • 2.Rdxc1#
    • 1...Bf6
      • 2.Rdxc1#
    • 1...Bg7
      • 2.Rdxc1#
    • 1...Bh8
      • 2.Rdxc1#
    • 1...Se2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
  • Tries
    • 1.Kh1?
      • 1...Kxb1
        • 2.Qd3#
      • 1...Rxb1
        • 2.Rd2#
      • 1...Bxb1
        • 2.Rd2#
      • 1...Bc3
        • 2.Rdxc1#
      • 1...Bd4
        • 2.Rdxc1#
      • 1...Be5
        • 2.Rdxc1#
      • 1...Bf6
        • 2.Rdxc1#
      • 1...Bg7
        • 2.Rdxc1#
      • 1...Bh8
        • 2.Rdxc1#
      • 1...Se2
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...g2+!
    • 1.Kh3?
      • 1...Kxb1
        • 2.Qd3#
      • 1...Rxb1
        • 2.Rd2#
      • 1...Bxb1
        • 2.Rd2#
      • 1...Bc3
        • 2.Rdxc1#
      • 1...Bd4
        • 2.Rdxc1#
      • 1...Be5
        • 2.Rdxc1#
      • 1...Bf6
        • 2.Rdxc1#
      • 1...Bg7
        • 2.Rdxc1#
      • 1...Bh8
        • 2.Rdxc1#
      • 1...Se2
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...g2!
    • 1.Rbxc1+?
      • 1...Rxc1
        • 2.Qd3#
      • 1...Bxc1!
  • Keys
    • 1.Qxf4!
      • 1...Kxb1
        • 2.Qxf5#
      • 1...Kxd1
        • 2.Qd2#
      • 1...Kc3
        • 2.Qc7#
      • 1...Rxb1
        • 2.Qd2#
      • 1...Bxb1
        • 2.Qd2#
      • 1...Bc3
        • 2.Qxc1#
      • 1...Bd4
        • 2.Qxc1#
      • 1...Be5
        • 2.Qxc1#
      • 1...Bf6
        • 2.Qxc1#
      • 1...Bg7
        • 2.Qxc1#
      • 1...Bh8
        • 2.Qxc1#
      • 1...Se2
        • 2.Qd2#
      • 1...Sd3
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 11
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINS(b),S_FLIGHT,XR(A)::QAB(E)
    • R(a);SBLOCK,XR(A)::R1(B)
    • B(c);SBLOCK,XR(A)::R1(B)
    • B(d);N_GUARD::R1(B),XS(b)
    • S(b);N_GUARD::QAB1(E)
    • S(b);N_GUARD::QAB1(E),XS(b)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(e);P_SPINS(b),S_FLIGHT,XR(A)::QAB(E)
        • R(a);SBLOCK,XR(A)::R1(B)
        • B(c);SBLOCK,XR(A)::R1(B)
        • B(d);N_GUARD::R1(B),XS(b)
        • S(b);N_GUARD::QAB1(E)
        • S(b);N_GUARD::QAB1(E),XS(b)
      • Refutation
        • P(h);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(e);P_SPINS(b),S_FLIGHT,XR(A)::QAB(E)
        • R(a);SBLOCK,XR(A)::R1(B)
        • B(c);SBLOCK,XR(A)::R1(B)
        • B(d);N_GUARD::R1(B),XS(b)
        • S(b);N_GUARD::QAB1(E)
        • S(b);N_GUARD::QAB1(E),XS(b)
      • Refutation
        • P(h);
    • Try
      • R(A);CHECK,XS(b)
      • Vars
        • R(a);XR(A)::QAB1(E)
      • Refutation
        • B(d);XR(A)
  • Actual
    • Q(E);XP(j)
    • Vars
      • K(e);P_SPINS(b),S_FLIGHT,XR(A)::QAB(E),XP(k)
      • K(e);P_SPINS(b),S_FLIGHT,XR(B)::QAR1(E)
      • K(e);P-FLIGHT::QAR(E)
      • R(a);SBLOCK,XR(A)::QAR1(E)
      • B(c);SBLOCK,XR(A)::QAR1(E)
      • B(d);N_GUARD,SBLOCK::QAR1(E),XS(b)
      • B(d);N_GUARD::QAR1(E),XS(b)
      • S(b);::QAR1(E)
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