MESON Chess Problem Database

Problem Display
PID: 149976 (5RQ1/pK2p1P1/P2kp2p/7P/2Pp4/3P4/3B4/8 w - - 0 1)

Calapso, Remo

L'Alfiere di Re, 1921

5RQ1/pK2p1P1/P2kp2p/7P/2Pp4/3P4/3B4/8

#2

9 + 6

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Bf4#
    • 1...Kd7
      • 2.Rd8#
    • 1...e5
      • 2.Qd5#
  • Tries
    • 1.Be1?
      • 1...Ke5
        • 2.Bg3#
      • 1...Kd7
        • 2.Rd8#
      • 1...e5
        • 2.Qd5#
      • 1...Kc5!
    • 1.Bb4+?
      • 1...Kd7
        • 2.Rd8#
      • 1...Ke5!
    • 1.Bf4+?
      • 1...Kd7
        • 2.Rd8#
      • 1...e5
        • 2.Qd5#
      • 1...Kc5!
    • 1.Ba5?
      • 1...Ke5
        • 2.Bc7#
      • 1...Kd7
        • 2.Rd8#
      • 1...e5
        • 2.Qd5#
      • 1...Kc5!
    • 1.Bg5?
      • 1...Kc5
        • 2.Bxe7#
      • 1...Ke5
        • 2.Bf4#
      • 1...Kd7
        • 2.Rd8#
      • 1...e5
        • 2.Qd5#
      • 1...hxg5!
    • 1.Bxh6?
      • 1...Ke5
        • 2.Bf4#
      • 1...Kd7
        • 2.Rd8#
      • 1...e5
        • 2.Qd5#
      • 1...Kc5!
    • 1.Rf4?
      • 1...Ke5
        • 2.Qb8#
      • 1...Kd7
        • 2.Rxd4#
      • 1...e5
        • 2.Qd5#
      • 1...Kc5!
    • 1.Rf5?
      • threat
        • 2.Qd8#
      • 1...exf5
        • 2.Qd5#
      • 1...e5
        • 2.Qd5#
      • 1...Kd7!
    • 1.Rc8?
      • 1...Kd7
        • 2.Rd8#
        • 2.Qd8#
      • 1...e5
        • 2.Qd5#
      • 1...Ke5!
    • 1.Qxe6+?
      • 1...Kc5
        • 2.Rf5#
        • 2.Rc8#
        • 2.Qd5#
        • 2.Qe5#
        • 2.Qc6#
        • 2.Qxe7#
      • 1...Kxe6!
    • 1.Qf7?
      • 1...Kc5
        • 2.Qxe7#
      • 1...Ke5
        • 2.Bf4#
        • 2.Qf4#
      • 1...e5
        • 2.Qd5#
      • 1...Kd7!
  • Keys
    • 1.Bc1!
      • 1...Kc5
        • 2.Ba3#
      • 1...Ke5
        • 2.Bf4#
      • 1...Kd7
        • 2.Rd8#
      • 1...e5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(A)
    • K(b);P-FLIGHT::R1(H)
    • P(c);OGATE::QAR1(I)
  • Tries
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • K(b);P-FLIGHT::R1(H)
        • P(c);OGATE::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(H)
        • P(c);OGATE,P_SPINP(c)::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • K(b);P-FLIGHT::R1(H)
        • P(c);OGATE::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT::B(A),XP(f)
        • K(b);S_FLIGHT::B(A)
        • K(b);P-FLIGHT::R1(H)
        • P(c);OGATE::QAR1(I)
      • Refutation
        • P(d);XB(A)
    • Try
      • B(A);XP(d)
      • Vars
        • K(b);S_FLIGHT::B(A)
        • K(b);P-FLIGHT::R1(H)
        • P(c);OGATE::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • K(b);S_FLIGHT::QAB(I)
        • K(b);P-FLIGHT::R(H),XP(a)
        • P(c);OGATE::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);
      • Threat
        • QAR2(I)
      • Vars
        • P(c);OGATE,XR(H)::QAR1(I)
        • P(c);OGATE::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(H);
      • Vars
        • P(c);OGATE::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);CHECK,XP(c)
      • Refutation
        • K(b);P-FLIGHT,XQ(I)
    • Try
      • Q(I);
      • Vars
        • K(b);S_FLIGHT::QAB(I),XP(f)
        • P(c);OGATE::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(f)
  • Actual
    • B(A);
    • Vars
      • K(b);S_FLIGHT::B(A)
      • K(b);P-FLIGHT::R1(H)
      • P(c);OGATE::QAR1(I)
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