MESON Chess Problem Database

Problem Display
PID: 152547 (1B4n1/1pR1pp2/2N2p2/Q1NkP3/1P4rr/2pPb2B/2K3b1/4R3 w - - 0 1)

Battiston, Alan Doris

L'Italia Scacchistica, 1985

1B4n1/1pR1pp2/2N2p2/Q1NkP3/1P4rr/2pPb2B/2K3b1/4R3

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxb7#
    • 1...Be4
      • 2.Qa2#
    • 1...Bd4
      • 2.Qa2#
    • 1...Bf4
      • 2.Qa2#
    • 1...bxc6
      • 2.Rd7#
  • Tries
    • 1.Se4+?
      • 1...Bc5
        • 2.Qa2#
      • 1...b5
        • 2.Qa2#
      • 1...Ke6!
    • 1.Sxe7+?
      • 1...Kd4
        • 2.Sb3#
      • 1...Kxe5
        • 2.Rd7#
      • 1...Sxe7!
    • 1.Sd8?
      • threat
        • 2.Rd7#
      • 1...Kd4
        • 2.Sb3#
      • 1...Kxe5!
    • 1.Bxg2+?
      • 1...Re4
        • 2.Qa2#
      • 1...Rxg2+!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Rd7#
      • 1...Kxd4
        • 2.Sb3#
      • 1...Kxe5
        • 2.Rd7#
      • 1...Rxd4
        • 2.Sxb7#
      • 1...Bxd4
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(d);S_CUTB(c)::QAR(F)+S(G),XP(h)
    • B(a);P_PINP(C),S_CUTR(d)::QAB(F)
    • B(c);S_CUTR(d)::QAB(F)
    • P(h);SBLOCK,XS(I)::R(J)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • B(c);P_SPINB(c)::QAB(F)
        • P(h);P_SPINP(h)::QAB(F)
      • Refutation
        • K(f);P_SPINR(d),S_FLIGHT
    • Try
      • S(I);CHECK,XP(i)
      • Vars
        • K(f);P-FLIGHT::S(G)
        • K(f);P-FLIGHT,P_SPINB(c),XP(H)::B(K)+R(J)
      • Refutation
        • S(k);XS(I)
    • Try
      • S(I);
      • Threat
        • R(J)
      • Vars
        • K(f);P-FLIGHT::S(G)
      • Refutation
        • K(f);P-FLIGHT,P_SPINB(c),XP(H)
    • Try
      • B(D);CHECK,XB(a)
      • Vars
        • R(d);P_SPINR(d)::QAB(F)
      • Refutation
        • R(d);CHECK,XB(D)
  • Actual
    • S(I);
    • Threat
      • R(J)
    • Vars
      • K(f);P-FLIGHT,XS(I)::S(G)
      • K(f);P-FLIGHT,P_SPINB(c),XP(H)::B(K)+R(J)
      • R(d);SBLOCK,XS(I)::QAR(F)+S(G),XP(h)
      • B(c);SBLOCK,XS(I)::QAB(F)
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