MESON Chess Problem Database

Problem Display
PID: 250132 (1K6/2Q5/2PN4/1P2P1P1/1q1kB3/1pR5/1b1N1P2/1n1R2r1 w - - 0 1)

Wolanski, Eustachy

Revista de Sah, 1927

1K6/2Q5/2PN4/1P2P1P1/1q1kB3/1pR5/1b1N1P2/1n1R2r1

#2

12 + 6

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc3
      • 2.Sxb1#
    • 1...Qxb5+
      • 2.Sxb5#
  • Tries
    • 1.Rd3+?
      • 1...Kc5
        • 2.Rd5#
        • 2.Qa7#
      • 1...Kxe5!
    • 1.Qb6+?
      • 1...Kxc3
        • 2.Sxb1#
        • 2.Qe3#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Kxe5!
    • 1.Qa7+?
      • 1...Kxc3
        • 2.Sxb1#
        • 2.Qe3#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Kxe5!
  • Keys
    • 1.Qg7!
      • threat
        • 2.e6#
      • 1...Qxd6+
        • 2.exd6#
      • 1...Qxb5+
        • 2.Sxb5#
      • 1...Kxc3
        • 2.Sxb1#
      • 1...Qxc3
        • 2.Sxb3#
      • 1...Rxg5
        • 2.Sxb1#
      • 1...Bxc3
        • 2.Sxb3#
      • 1...Sxc3
        • 2.Sxb3#
      • 1...Qc4
        • 2.Rxc4#
      • 1...Qc5
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(f);N_GUARD,S_CUTR(b),S_FLIGHT,XR(D)::S(B),XS(a)
    • Q(e);CHECK,XP(F)::S(J),XQ(e)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • K(f);S_FLIGHT,XP(G)
    • Try
      • Q(K);CHECK,N_SPINP(F)
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::QAB1(K),XQ(e)
      • Refutation
        • K(f);S_FLIGHT,XP(G)
    • Try
      • Q(K);CHECK
      • Vars
        • Q(e);N_GUARD,N_PINP(F),P_SPINQ(e)::QAB1(K),XQ(e)
      • Refutation
        • K(f);S_FLIGHT,XP(G)
  • Actual
    • Q(K);
    • Threat
      • QAB(K)+P(G)
    • Vars
      • Q(e);CHECK,N_PINP(F),OGATE,XS(J)::QAB(K)+P(G),XQ(e)
      • Q(e);CHECK,XP(F)::S(J),XQ(e)
      • K(f);S_CUTR(b),S_FLIGHT,XR(D)::S(B),XS(a)
      • Q(e);N_PINP(F),SBLOCK,XR(D)::R(A)+S(B),DCHECK,XP(d)
      • R(b);N_GUARD,XP(H)::R(A)+S(B),XS(a)
      • B(c);SBLOCK,XR(D)::R(A)+S(B),DCHECK,XP(d)
      • S(a);SBLOCK,XR(D)::R(A)+S(B),DCHECK,XP(d)
      • Q(e);N_GUARD,N_PINP(F)::R1(D),XQ(e)
      • Q(e);N_PINP(F),SBLOCK::R1(D)
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