MESON Chess Problem Database

Problem Display
PID: 225801 (2n5/2K1B2B/2R2P2/3kp3/R1pP2r1/1n1Q2pb/8/2rN2b1 w - - 0 1)

Szwedowski, Leopold Mieczyslaw

Praca, 1958

2n5/2K1B2B/2R2P2/3kp3/R1pP2r1/1n1Q2pb/8/2rN2b1

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sc3#
      • 2.Qxc4#
    • 1...Rb1
      • 2.Sc3#
      • 2.Qxc4#
    • 1...Rxd1
      • 2.Qxc4#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rxd4
      • 2.Be4#
    • 1...Re4
      • 2.Bxe4#
      • 2.Qxe4#
    • 1...Rg5
      • 2.Be4#
      • 2.Qe4#
    • 1...Rg7
      • 2.Be4#
      • 2.Qe4#
    • 1...Rg8
      • 2.Be4#
      • 2.Qe4#
    • 1...Bh2
      • 2.Se3#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bxd4
      • 2.Se3#
    • 1...Sa1
      • 2.Ra5#
    • 1...Sd2
      • 2.Ra5#
    • 1...Sxd4
      • 2.Ra5#
    • 1...Sa5
      • 2.Rxa5#
    • 1...Sb6
      • 2.Rd6#
    • 1...Sd6
      • 2.Rxd6#
    • 1...Sa7
      • 2.Rd6#
    • 1...Sxe7
      • 2.Rd6#
    • 1...c3
      • 2.Qc4#
    • 1...exd4
      • 2.Qf5#
  • Tries
    • 1.Ra5+?
      • 1...Sc5
        • 2.Raxc5#
      • 1...Sxa5!
    • 1.Qf3+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Re4
        • 2.Qxe4#
      • 1...e4!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qd3#
      • 1...Rxd4
        • 2.Bg8#
      • 1...Bxd4
        • 2.Qe6#
      • 1...Sxd4
        • 2.Rc5#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rg5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 13
  • Sets
    • R(a);N_GUARD,XS(A)::QAB1(B),XP(f)
    • R(a);N_GUARD::S(A),XR(a)
    • R(g);N_GUARD,P_SPINR(g),XP(D)::B(I)
    • B(b);N_GUARD::S(A)
    • B(b);N_GUARD::S(A),XB(b)
    • B(b);N_GUARD,P_SPINB(b),XP(D)::S(A)
    • S(c);N_GUARD::R(C)
    • S(c);N_GUARD,P_SPINS(c),XP(D)::R(C)
    • S(c);N_GUARD::R(C),XS(c)
    • S(j);N_GUARD::R1(E)
    • S(j);N_GUARD::R1(E),XS(j)
    • S(j);N_GUARD,XB(H)::R1(E)
    • P(f);S_CUTR(a)::QAB1(B)
    • P(i);OGATEB,P_SPINP(i),SBLOCK,XP(D)::QAR2(B)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::R1(C),XS(c)
      • Refutation
        • S(c);XR(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(h);OGATEB,P-FLIGHT,P_SPINP(f),XP(D)::QAR1(B)
        • R(g);N_GUARD,P_SPINR(g)::QAB1(B),XR(g)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • Q(B);P_PINP(i)
    • Threat
      • QAR1(B),XP(i)
    • Vars
      • K(h);N_SPINP(i),OGATEB,P-FLIGHT,P_SPINP(f),XP(D)::QAR1(B)
      • R(g);N_GUARD,SBLOCK,XP(D)::B(I)
      • B(b);SBLOCK,XP(D)::QAB1(B)
      • S(c);N_GUARD,SBLOCK,XP(D)::R1(E)
      • R(g);N_GUARD::QAB1(B),XR(g)
      • R(g);N_GUARD::QAB1(B)
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